Aramok Modpack

This modpack provides a slightly more technical but still moderately vanilla experience, including Tetra, and primarily Create as the technical aspects, Wonderful Enchantments, Nature's Compass, Waystones, and JUI (Just Enough Items) as quality-of-life mods, and finally a couple of cosmetic mods;
Item Borders
Customizable Elytra
Clumps

Every mod except for Create is fast to get into so this modpack does not have a big learning curve. This modpack comes with no extra mobs, gear (Except for the custom gear using vanilla items found in Tetra) or bosses.

The main mod for progression is going to be the Create mod, as it allows for very efficient and both early and late-game automation in all categories, and is very intuitive once you first get started. Tetra is a good one to throw in there, as it will allow you to make custom gear that is a lot better than vanilla gear but also requires more diverse materials and unorthodox crafting processes, as well as having to use the gear before it reaches full potential. Wonderful enchantments adds a couple of new unique enchantments, as well as curses, that are fun and useful. Waystones is a mod that provides easy transportation, aka teleportation.