The only teams I could see is Thorsport and GMS possibly making a return, I could see those two organizations making the move.
Thorsport kinda goes where the support is the best at the time. Already an established organization as well, I could see them making that step.
I'm not sure what if any support CR7 is getting with Enfinger? He really elevates that team I feel.
Heck looking at it there are only 8 teams in the top 23 in owners points right now.
Here those teams are and the trucks they own some outside the top 23.
TRICON Garage (11, 17, 15, 1, 5)
Front Row Motorsports (38, 34)
McAnally Hilgerman Racing (19, 18, 91, 81)
CR7 Motorsports (9)
Spire Motorsports (7, 07, 71, 77)
Niece Motorsports (45, 44, 42)
ThorSport Racing (98, 13, 99, 88, 66)
Halmar Friesen Racing (52)
Here's the rest of the field from highest in points team to lowest with their truck numbers
Rackley W.A.R (26)
Freedom Racing Enterprises (76, 67)
Resume Brothers Racing (22, 33, 2)
Young's Motorsports (02, 20)
Henderson Motorsports (75)
Hill Motorsports (56)
Terry Carroll Motorsports (90)
Norm Benning Racing (6)
Cook Racing Technologies (84)
Hettinger Racing (4)
Akinori Performance (no number listed)
GK Racing (95)
FDNY Racing (28)
So to boil it down Ram is either going to
1) flip a big team which eliminates several imo like Tricon (Toyota) Spire (Chevy) Front Row (Ford)
2) flip one of the remaining big teams. I'd rule out Friesen they've had to much chaos to want to switch manufacturers again.
3) pick a smaller team, unless they are going to give one of these small teams a massive investment they will be running junk. Because as we see most of the top 25 is the 8 bigger teams.
4) upgrade a part time team to full. Same problem as 3 they aren't good outside of Henderson and the story is about how small they are when they run good, they don't strike me as wanting to go full time like this.
5) Bring in a new team entirely, this is what I think they need to do or will do. But that creates its own problems...especially if you have a driver like Cleetus as has been rumored with no truck experience.