AJ and Meadow. Meadow more-so in the earlier episodes, but AJ by far in the later ones.

And the most annoying mobster, in mine opine...
Ralphy Ciffaretto. Something about this guy never sat right with me, even before we were exposed to his "sexual proclivities" Tha scene where he's cutting his toe-nails in bed with Janice?("You catch some schrapnel?") Blech.
And he took that poor [BadWord] eye out too, whatsisface Georgie is it? (Damn ive lost it)
Anyway, im sorta confusing annoyance with revulsion in a way.