Alright, work by work:
The Steve and Larry short is OK, clearly more compromised than his later stuff.
Family Guy was pretty damn funny, it's a bit of a shame that it went downhill as hard as it did.
American Dad is pretty great, though I'm not sure if I actually watched the last season.
Cleveland Show always sucked but I don't think it was without it's moments.
Ted is pretty damn funny, I haven't seen the sequel.
I hear the Wild West movie sucks but I haven't watched it.
The compilation of rejected Family Guy cutaway gags that somehow got a DVD release is the only true abortion of his in my opinion.
The Orville is amazing, it's basically ST TNG with more and bolder humor.
His singing is pretty good, not what I listen to regularily but it's good.
I don't think I remember actually watching his episodes of Dexter's lab, the synopsises on Wikipedia don't seem familiar. Same with the other CN shows, I might have but it's not something I remember.