I really like your list. Some things I'd put forward.
Aquaman - This is a 7-3 in his favour, sugar coat it as much as you want he has everything he needs to shut her down completely. His B1, a plus on block, hit confirmable combo starter; out ranges Cheetahs D3 and its her furthest reach normal. Not to mention his D2 just shutting down her forward movement options. Yes there are worlds where we bait out his d2s and whiff punish and we catch him miss-spacing with a d3 but the match-up is totally in his own hands.
Joker - I don't have too much experience but this might also be a 7-3 in favour of Joker, Godlike D2 (even shuts down batman) and his gas canisters are super annoying to get around. I don't disagree with your numbers but its a match-up to think about.
The Flash - I really can't see Cheetah winning this, its 5-5 or 6-4 in his favour. Cheetah has no choice but to go toe to toe with flash and he has the best mix in the game. Our wake-up against his F3 set-ups (especially in the corner) is a huge weakness. You said Harleys jump 2 shut down Cheetah but Flashes Jp1 (I think) does literally the same thing its busted active from start to finish.
Cheetah goes at least 5-5 with Catwoman if not wins the match-up (5.5/4.5) its super close. Especially when they know how to B3 jump ins.
Wonder Woman probably wins 6-4 too
As far as both Flash and Wonderwoman, the fact that you could retreat the ENTIRE match and build meter from backdash cancelling pounce means that they have to approach her or make it so she always has full meter for bounce-cancelled huge damage from EVERYTHING she does. If they try to build meter themselves then they run the risk of being pounced on at any moment because you are buffering pounce anyway so if WW tries to whip or flash tries to faze then it's in Cheetah's best interest.
You really never have to play Flash's game. I understand that at any point he could corner drag you and go mix crazy, but in the neutral when Flash is in the approach of Cheetah, it's just MBF3 mixups all day.
For WW, you do need to bait out D2 or shield toss to get in, but once you are, like I mentioned before it's just a huge bounce-cancel fest so the WW player has to decide whether they want to go relentless rushdown vs Cheetah, or just risk Cheetah having full meter the entire match.
Joker IS a bad matchup, I'm glad you see that, but his wakeup options are ASS lol. If it wasn't for that I'd say it'd be worst, but he really is free on his wakeup.
Aquaman is uphill on paper, and it is probably Cheetah's worst 6-4 imo. But playing the MBF3 dash in game vs Aquaman is something he can't really avoid because he's very stiff. He is going to end up blocking a lot of F3 and every time he does, he has to guess just like everyone else. On oki his water shield is annoying, but it is still a mindgame whether he goes for it or not and oki on him is still very viable. His d2 is godlike, but like some other characters it has long'ish recovery, so baiting it means a free punish or at least a free mixup. Again, it's a bad MU for sure, but I've played the best Aquaman players a decent amount of times and I could tell you that it's nothing close to how the Batman MU is. It just takes a ton of patience.
And as far as Catwoman goes, if the Catwoman doesn't know how to abuse Cheetah's shortcomings then I'd even say that Cheetah wins. But if the CW knows that any pounce attempt is a MBCatdash and that her backdash is always a great option vs her it makes it so she has more opportunities than Cheetah does due to her being better at the grounded footsie game. I'd say this MU is actually 4.5/5.5 in CW's favor, it's not that bad compared to her other 4-6s at all.
EDIT: On second thought yea, it's way too close. I'm changing it to 5-5. On oki Cheetah is always safe vs her so it swayed me back.
