None can say CM Punk because he was gone for 8 years...and they can't be a castoff that was never on TV.
But honestly...none? Rusev/Miro? No. Undisputed Era? No. Andre O le o le o? Please..... FTR? Eh...I can see either way. Danielson? No. He doesn't need to be in that group. Buddy? Pffftttttt.... Plumber Moxley? Talk abot regressing.... Keith Lee? His ego thought he'd be, but now in a tag team, lol... Jeff Hardy? lolololololololol Malakai Black?! Pfffftttt... Samoa Joe? TBD, but I don't think he'll ever get a sustained run again with his injury issues.. Shawn Spears? Good lord...
Did I miss anyone
Rusev was US Champion and although never a prolonged main eventer, That Rusev Day thing was very over.
Advantage WWE.
Undisputed Era was big in NXT, held all the titles, and were utilized much better than they are in AEW. I have more confidence in Fish and O'Reilly going forward than Cole.
Advantage WWE
Andre Oleo was a top guy in NXT but other than a mid card title reign or two on the main roster, didn't do too much. He was still featured in a more prominent role than he is in AEW.
Advantage WWE.
Daniel Bryan was the face of WWF and over as big as anyone when he got his first title run and when he returned. His heel title run most recently was kind of stale, but when you are the biggest fish in the biggest pond like he was, you have to say
Advantage WWE until we see what Tony can do.
Buddy Murphy was a lackey in WWF and is still a lackey in AEW. He has tons of potential and a great look but for whatever reason, he is what he is.
EVEN
Dean Ambrose was part of one of the hottest factions and got a run as the guy in WWE. He was put into some good programs but despite getting the title, never really was The Man. AEW is definitely pushing him more as a single so I will say
Advantage AEW but as a whole, I think he will always be remembered more as Dean Ambrose, member of The Shield. This is a push unless you focus on the strictly single run.
Keith Lee showed flashes but had the charisma of a boot sole. The ability he had for someone that size is undeniable but has pretty much sucked in both companies. His NXT run was pretty good so for that reason, I'll say
Advantage WWE.
The Hardy's Advantage WWE
Aleister Black was great in NXT but didn't do too much on the main roster. Regardless, his WWE work is much better.
Advantage WWE
Samoa Joe between the two, I'd say
Advantage WWE but in reality, his best was ROH and TNA.
Shawn Spears isn't even worth mentioning.
Overall, most of the WWE guys saw more success in NXT than on the main roster but have been used a lot better than they are currently being used. Like I said, Moxley is the exception based on the singles run but I still think Dean Ambrose will be remembered moreso than Jon Moxley.