What is it ?

A mod bringing Minecraft Dungeons's creatures into the base game with well-made and accurate animations (+ sound effects), as well as smaller tweaks related to vanilla mobs to make them behave similarly to their Minecraft Dungeon counterpart.

What does it offer ?

Plenty of monsters straight from Minecraft Dungeons which will be added to vanilla structures and raids ;
Mobs which are tied to specific environnements in MC Dungeons replace by default their vanilla counterpart in Minecraft's similar biomes, there's even an option in the configs to get biome-specific raiders, which means that some illagers will automatically replace existing ones in certain biome types (ex : mountaineers replacing vindicators in mountain-ish biomes).
Changes were made to some vanilla mobs : Husks get their resistance and resilience like in MC Dungeons and spiders unlock a ranged attack (a bit bugged if you ask me); also zombified piglins now can now use crossbows.

Anyways this mod adds plenty of mobs from Minecraft Dungeons, that I will quickly list below :

Here's the whole list of overworld Undeads (SPOILERS) :

-The Jungle Zombie :
This zombie found in jungles can poison the player on melee, there's nothing more to him
-The Frozen Zombie :
Probably originally inspired by the lobber zombie from Minecraft Earth before being added to MC Dungeons as a frozen undead, he stops to throw snowballs if you are too far, which will slow you down (found in snowy biomes)
-The Mossy Skeleton :
Ancestor of the now vanilla Bogged, this is MC Dungeons's venomous skeleton (found in jungles)
-The Skeleton Vanguard :
Found in vanilla Desert Temples to mirror where it appears in Minecraft Dungeons, these spear-wielding skeletons (if Dungeons Gear is installed) can also use shields, meaning they attack in melee and make attempts at blocking certain attacks; their shield can be temporarily disabled by using an axe just like how you would expect
-The Sunken Skeleton :
These are skeletons which can use crossbows and appear in various oceanic biomes (their arrows are not affected by water pressure just like tridents)
-The Wraith :
Minecraft's official ghost (unless you count vexes and allays) appearing at night among other hostile mobs, they can teleport around and set an area on fire with ghostly temporary flames
-The Necromancer :
An sort of lich, summoning skeletons and zombies to aid them in battle while they attack from a distance using their staff; summons can be configured, but I've notice that their summons stop attacking if they get hit by the necromancer's projectile, which is most likely an unintended bug
-The Drowned Necromancer :
An sort of drowned mage, they summon drowned and sunken skeletons to aid them in battle while they attack from a distance using their staff; summons can be configured, but feature the same issue that the regular necromancer has with them un-aggroing if accidentally hit by their master; I've also noticed that the drowned necromancer doesn't attack with lightning at all, which is odd since in MC Dungeons they can attack using lightning

Here's the whole list of Illagers (SPOILERS) :

-The Royal Guard :
Surprisingly weak when compared to its original Minecraft Dungeons equivalent, The royal guard is a slower melee vindicator able to make use of a shield. If Dungeons Gear is loaded, they will have a custom armor/weapon/shield; They may appear in woodland mansions .
-The Iceologer :
A mob found in the snowy areas of the world, which only attacks by letting a chunck of ice slowly fall on your head to slow you drastically; I've seen more interesting iceologer concepts, but this one is simply trying to mimic the MC Dungeons one, therefore its enough by this mod's own standards
-The Geomancer :
A mob which may appear in raids, he can make explosive pillars rise from the ground, or let generic pillars block your way for less than 5 seconds
-The Mountaineer :
A vindicator variant which can climb walls like spiders
-The Windcaller :
A mob which may appear in raids, and attacks by using the wind to push you or make you take fall damage
-The Illusioner :
Just like in Minecraft Dungeons's DLCs, this take sees the illusioner as a mini boss mob which creates copies of himself (which are different entities) and attacks with fireworks
-The Mage :
Kind of the "default wizard" the mage was eventually removed from Minecraft Dungeons (and was added back to Minecraft Dungeons Arcade afterwards); in this mod he can lift you in the air to smash you against the ground, while also making copies of himself and having a similar amount of hp to the illusioner -> the way this lets other raiders catch up to you because he is quite slow at lifting you makes this mob a priority to kill in raids (he can also shoot projectiles in an arc)
This mob is probably the most unique mob of the whole mod

-The Squall Golem :
The Squall Golem, appearing in raids at certain waves
-The Redstone Golem :
The Redstone Golem, a miniboss which appears at times in raids

Here's the whole list of Nether Mobs (SPOILERS) :

-The Fungus Thrower :
This piglin-like mob in Minecraft Dungeons is meant to act kind of like a nether witch equivalent, throwing you poisonous mushrooms leaving a small blue cloud behind them when attacking. This is the same here, expect the "Warped" effect it gives lacks a texture in the 1.19.2 version of the mod for some reason (they should spawn in bastions remnants, and can spawn in various nether biomes; they can trade too, but there's no custom trades made for them sadly)
-The Zombified Fungus Thrower :
This piglin-like mob in Minecraft Dungeons is meant to act kind of like a nether witch equivalent, throwing you poisonous mushrooms leaving a small blue cloud behind them when attacking. This is the same here, expect the "Warped" effect it gives lacks a texture in the 1.19.2 version of the mod for some reason (they can spawn in various nether biomes)
-The Wildfire :
This mini-boss/tough mob, originally an outcast creature from the first ever mob vote, appeared in the Nether DLC for Minecraft Dungeons and have shields around them you have to destroy before attacking the creature they protect, they are added to Nether fortresses within the mod and can also summon blazes; I have seen better renditions of the Wildfire as part of other mods, but it is still nice to have it here as well

Here's the whole list of Ender Mobs (SPOILERS) :

-The Watchling :
This Enderling teleports and attacks in melee; there isn't much to him
-The Blastling :
This Enderling blasts acid from a distance, there isn't much to him
-The Snareling :
This Enderling shoots a projectile which keep you in place, before teleporting to you for melee attacks (the Ender-Spider if you will)
-The Endersent :
An end tough mob/miniboss, acts just like in Minecraft Dungeons

All of these Ender-related mobs can naturally appear in the outer islands

Here's the whole list of Others (SPOILERS) :

-The Icy Creeper :
A creature leaving a cloud of slowness after exploding, appears in snowy environnements
-The Quick-Growing Vine :
A corrupted vine which appears to block the way when mobs are near (appears in jungles); a sea variant of this mob exists called the Quick-Growing Kelp
-The Poison-Quill Vine :
A corrupted flower which shoots poisonous projectiles when it notices you (appears in jungles); a sea variant of this mob exists called the Poison Anemone
-The Whisperer :
A moving plant-like creature with the ability to summon Quick-Growing Vines to block your way (which can be killed), Poison-Quill Vines to attack you and can entrap you in a way resembling how spiders trap you in webs with this mod (appears in jungles); A sea variant of this mob exists called the WaveWhisperer
-The Leafpleaf :
A tanky creature (kind of a weaker "plant ravager") which attacks mainly by pounding the ground, meaning it can damage all mobs in a given radius (appears in jungles)

As you may have noticed, while the list is big, two things are missing :
Bosses (which are not easy to make in Minecraft), and the Enchanter (which has its own unrelated separate mod called Enchant with Mob which I've already reviewed).
Most of these mobs if not all don't have any drops/items related to them, and I can think of a bunch of mods which add similar creatures with extra items to have fun with.
Something else I forgot to mention when first writing this review is that some of the melee mobs (such as the Watchling ) have attacking animations which do not exactly coincide with their ability to deal damage , making certain mobs (such as the Endersent ) a bit more punitive than they normally should be;
Not much of an issue since most mobs are not melee attackers , and I have not noticed this issue with the undead added by the mod.

In conclusion

Honestly this is a pretty decent mod (while I do have small gripes with certain creatures I have mentioned previously), and ever since Minecraft Dungeons was a thing (and that I noticed its gameplay may not suit me very well; I've played it and enjoyed the game anyways, but that was way after playing this mod), I've hoped for someone to bring these illagers in Minecraft Java to use them in raids;
Sadly as of writing this review the mod isn't currently available for 1.20.1, no shame to the author it's just that plenty of raiders mod have taken the leap forward while this one appears to be stalling behind. That said there is an unofficial fork for 1.20.1 called Dungeons Mobs Port , which might be a temporary fix before it gets ported to later versions more officially; Another solution which I've recently learned about is Goety - The Dark Arts , which while being a magic mod focused on souls first and foremost it does feature Minecraft Dungeons illagers as servants (which can be found as regular hostile mobs using the Goety Hostility addon on top of that), as well as new illagers and structures.

This mod has a config file, but unlike Illage and Spillage and other mods you cannot control exactly which waves the raiders appear in as you are 'meant' to make your own datapack for that, meaning that if you are only relying on this mod you only can enable or disable mobs for raids. That is still better than Savage and Ravage which straights up prevents you from disabling certain mobs from being in raids at all.

Anyways the mod goes quite well alongside regular illagers mod (like Illage and Spillage, Savage and Ravage among others, and it is explicitly made to work with Dungeons Gear which is a mod focused on adding various weapons and artifacts from Minecraft Dungeons to various loot tables; I've made a stack on my ModDex profile having all of them anyways, feel free to check which ones are in 1.19.2 or the version you want this mod for)