Let's look at the transfer portal in the last three years for Top 7 teams:
2022: Ole Miss, USC, South carolina, LSU, Louisville, Miami and Texas
2023: Colorado, Louisville, USC, UCLA Auburn, Ole miss, Arkansas
2024: As of right now, and it may change in few weeks, but it is
Louisville, Colorado, Ole miss, FSU, South carolina and NC State.
So I'll pick Ole Miss, USC, Louisville since they have been so active in the last three years.
Ole Miss: 10-3, 8-5 and 11-2 - They have done well. Transfer portal helped.
USC- 4-8, 11-3, 8-5 - They was doing well until the last few games where they regressed. Transfer portal helped.
Louisville- 6-7, 8-5, 10-4 Transfer portal definitely helped.
I don't see this going anyway anytime soon. More and more teams are realizing that Teams can actually win with right players out of the portal. So yes, they can be a top 5 team in the nation.
Oh, Ole Miss was and is always a threat in SEC.... Kiffin is always a threat to any other coaches on the field, except for Sark. Kiffin and Sark can go tic and toe with each other.