4 from USFL although Houston gamblers are Roughnecks now.
USFL
Houston Roughnecks
Memphis Showboats
Michigan Panthers
Birmingham Stallions
XFL
Arlington Renegades
StLouis Battlehawks
DC Defenders
SA Brahmas
https://www.theusfl.com/
https://www.theufl.com/teams
USFL
Houston Roughnecks
Memphis Showboats
Michigan Panthers
Birmingham Stallions
XFL
Arlington Renegades
StLouis Battlehawks
DC Defenders
SA Brahmas
https://www.theusfl.com/
https://www.theufl.com/teams