Still haven’t tried some of them but most seem damn fun and decent.
Mui Mui: Only tried her once, haven’t quite got a feel for her but she’s very popular, very fun and looks pretty easy to pick up and play. Rekkas have a Karin-style sway back you can do 2nd or 3rd in the chain, probably punishable by fast supers but probably safe from punishment without using meter. Has few anti-air normals right above her head but makes up for it by having good aerials, great air/ground mobility, and a stand C that extends and retracts like 10 fuckin’ feet from where she stands. Has the most awesome/hilarious j. CD in the game. Go headbutt!
Hein: Haven’t played him yet, looks decent. Shield super for anti-air, several good high kick normals to anti-air in front of his face. Looks like his combos are fairly easy, divekick helps mix up his air-to-air zoning/offense a bit. I don’t see him being explosively good but I’m sure he’ll be decent and mildly popular.
Kukri: Seems like the new Duo Lon. KOF 13 Duo Lon, not KOF2k3 Duo Lon, let’s not get too excited here, heh. Tricky, kind of evasive, probably in deep trouble if you can knock him down and stay on top of him, but seems like he’d be a good battery character to fight people before they get tons of bar to melt face with. His EX teleport on wakeup can lead to some cute shenanigans. I haven’t tried him yet, just been watching other people mess with him.
King of Dinosaurs: …sigh. I want to love him, but he really kinda sucks. His jump is shockingly floaty for a big heavy grappler and he can’t get by just marrying the floor because he moves too friggin’ slow. The armor on his crouch C is really good but it’s hard as hell to control the space where he can win 100% anti-airing with it. Stand C is less useful than I thought because it whiffs crouching; far higher-risk armor move to throw out than, say, a Maxima autoguard normal. Overall it takes genius-level neutral play to stay in his effective range; if you’re not married to being the King of Dinosaurs then Daimon is probably an easier version of the same kind of character (a tanky grappler who holds his space with nasty anti-air).
Nakoruru: See NerdJosh on CEO stream archives for proof of concept. IDK if she will make top tier but she’s a good candidate for week 1 monster. her crouch C can be special-cancelled surprisingly late in the active frames; you can anti-air with it at max height and still go into flight mode. Abusing c.C anti-air xx Annu Musube is surprisingly hard to punish (for now). Her bird comes out even if she gets kicked in the face while calling him, and her bird super is a really nice, fast whiff punish/combo ender. Her DP is probably OK too but you hardly need it since her c.C is so good. She is definitely a character to watch.
Shun’ei: Has a very weird far s.C (weird little elbow whiff move) but is otherwise a straightforward, pick-up-and-play kinda character. Many good kick normals, easy-ish combo routes. Not many air normals can be cancelled into air dash, though; I think only his j.A can be cancelled into them. But the extra air mobility is still nice to throw off characters with strong anti-air and/or air-to-air.