I'd like to nominate Lanturn for B rank(it isn't on the list at all). It's ability and typing allow it to notably wall a lot of special attackers just as well as Lax. It has a nice choice specs set that performs a role similar to BandLax. Besides the electric/flying types it walls, Lanturn allows one to have another bulky water type without stacking electric weaknesses. It is the #1 Togekiss switch having a chance to OHKO the paraflinch set after rocks(while rocking specs). It works as a great chandelure check when Lure isn't specs-locked into shadow ball or carrying energy ball.
The problems with it is that unless one running choice specs his or her attacks are pitifully weak. It also adds another ground weakness that isn't friendly in UU.