I didn't start watching until Season 19. So that may be a bit biased. However, I think the hosts from the middle seasons were so bad and on for so little time, the newer hosts and some of the original hosts are the best.
SashaBaby2010 omg youre so right the middle seasons were the WORST. My ranking would be similar although Joy, Whoopi, Sherry and Rosie are the top cause theyre the OGs (fuck Boring Barbara and Cunty Elisabeth)