This is pretty tough. Are we prioritizing how funny they were at their prime or consistency over their entire careers. I'll be honest, a lot of them were very funny at particular points of their career, but almost all of them fell off hard for me at some point.
If it's the former, from that list I'd go with Dave, C. Rock, and Ced. If it's the latter, Dave is like the only one I thought has been really funny across his whole career.
I also cosign everyone who said Patrice O'neal should have been on that list.