His Sims reviews are the most "mainstream" of his videos, but he has a huge knowledge of retro games and technology that I find super interesting. He also has a "thrifting" series about going to Goodwill I find fun. Underrated guy, definitely recommend.
iSekC is a pretty funny guy.
Have you watched Rhett & Link before? They do skits and music and they have a daily talk show which is pretty cool. (Good Mythical Morning)
Also nigahiga makes the best videos ever imo, he's basically the only YouTuber that makes up the best ideas for videos and is always so creative.
Also YAY SUPERWOMAN :3
Here's some people i enjoy watching~
yuriofwind - he talks about video game betas, hacks, and very bad creepypastas
chuggaaconroy - lets player
andrewarcade - simulation game lper (though sometimes not)
jacksepticeye - lper
markiplier - lper
game grumps - lpers
vinesauce (both joel and vinny) - lpers sorta???
maseaanela (youtube isnt loading so i cant spell some names right) - lper
i'll add more to the list when youtube starts working for me again lol