Taking into account only fluidity as a factor, from best to worst :
Khlas is #1 (but gay oriented animations),’specially the new anims.
I place Mike24 there. Again, only taking into account fluidity, not the others aspects of the animations.
KIKI and E404P have similar fluidity, but KIKI sounds a bit higher with some movement. I still prefer E404P because her anims have better ideas, but again, it’s out of subject here.
Greynaya, assassin have similar fluidity.
Amra, OLL, lupobianco, savaccini. Sometimes Amra deserves to be way higher, but it’s not consistant enough to deserves to be #2.
others in general.
My personal favorites are : Khlas, Greynaya, E404P, lupobianco, mike24,kiki. But everyone has different taste.