HiGamingTime
YTtalk Mad
It works mostly for horror games for me anyway, otherwise it is a bit too gimmicky. But I see no harm in having a little facecam in the corner for some games, feels like you get to know the youtuber a bit more
I mean putting up a facecam makes me think, "Oh they're only watching for my reactions, not the gameplay or my commentary." But hey that's just me.