Teams currently with the most 2019 salary cap space, according to NFLPA salary cap report (rounded):

Colts $58.5M
Texans $38.5M
49ers $34.8M
Browns $33.3M
Titans $32.2M
Jets $26.4M
Raiders $26.2M
Lions $24.4M
Seahawks $24.2
Bills $23.9M
Dolphins $23.8M

— Sal Capaccio 🏈 (@SalSports) May 23, 2019