greedycraft. it's a huge modpack with over 500 mods. 500 mods sound like a lot, and it definitely is, but the pack runs better than most other packs WITH SHADERS. the pack features some light gating and progression. its growing a lot, and in 20 days its playercount has doubled (from 12,500 to 24,000). it would also be the only server which hosts this pack. but i don't know a lot about maintaining and running a server, so its a pretty huge maybe and would require som testing before starting
https://www.curseforge.com/minecraft/modpacks/greedycraft