Aegislash is probably going to have large usage in OU thanks to it being so versatile--people expect the bulky SD set and are hit by the mixed wallbreaker set.The OU pokes I will say are:
Talonflame (Priority BB + Roost is just too damn good to hold up. Requires some support but it's revenge killing/cleaning ability is unparalleled.)
Greninja (Yeah Protean has become the new no weak but it still outspeeds most of the meta with decent offensive presence and Spikes + U-Turn making it like a Starmie that lays hazards instead of controlling them.)
Gourgeist (Pretty good bulk and above average attack for a wall. Also has a crapton of support/stalling tools to abuse. Spinblockers aren't the be all and end all anymore but Grass/Ghost is still great at stopping many physical attackers.)
Zygarde (Real cool bulk and is good slow booster with Coil. Has niches over Chomp with bulk and Espeed.)
Azumarill (Already a decent-ish pokemon got a lot better with an extra (Really good) STAB and more resistances. Also Bellyjet is pretty sweet if you can pull it off)
Kangaskhan (This thing wrecks shit with it's mega. By far my favourite one of the bunch even with Gengar having the almighty Shadow Tag. Not only can it run a PUP Boosting set it can also run a classic Gen 5 Fake Out + Sucker Punch set that utterly destroys pure offense)
Aegislash is pretty cool being a mixed pivot but I'm not too experienced with facing that set and Haven't seen or used Togekiss yet.
Togekiss is the reason why Garchomp runs Stone Edge. It completely walls Outrage/Dragon Claw+EQ, and thanks to its special bulk it can take unboosted Fire Blasts from any DD sweeper other than Mega Charizard X. And it 4x resists Fighting and Bug, two of the most common offensive types in OU.