What are the best mods for additional traits and personalities for The Sims?

VickiSims has a 100 Trait pack and several other trait-related mods.

Thepancake1 and MizoreYukii have a More Traits in CAS mod that I consider absolutely essential.

KiaraSims has a ton of traits in six categories. Highly recommend checking out the other stuff too.

FDSims has a Give Me Some Talent mod.

Helaene expands on the preferences with her Preferences Plus mod.

Kuttoe has lifetime quirks and several trait and preferences options.

Lumpinou has a Talents and Weaknesses mod as well as several other great mods.

MissyHissy covers whims, hobbies, and personality.

Just to name a few. :D

@FurAndYarn has the two most essential links, VickiSims and thepancake1. Thepancakes1 mod adds 2 more trait slots, 5 total, and pair that with all of VickiSims(chingyu) traits I went from struggling to fill three slots to not being able to narrow it down to which 5 to give my sims. I'd give another shout out to Kuttoe from her list. Between VickiSims and Kuttoe alone I have close to 150 traits to choose from. I have several random traits that I'm not sure who to give credit to. Her list is pretty darn good.