My guess is Clemson would go to the SEC.
The SEC added Texas when it already had aTm, over the Aggies' strenuous objections. The precedent is there.
Texas A&M had no say. New member and the Lonestar State is the size of a medium-sized country. A&M doesnt carry that state. Austin is a new market and UT is a blue blood and by far the most popular team there. The SEC would have kicked Texas A&M out to get Texas if they had to.
Florida State will 100% be in the SEC. Florida doesnt want them and Alabama, Georgia, and others probably dont either but they also dont want the Big Ten in Florida.
Clemson isnt a big enough brand and not in an important enough market for the SEC to add Duplicate South Carolina. They go to the Big Ten I think.
UNC and UVa will go to the SEC. I dont think Pitt to the SEC is as far-fetched as it sounds. It eats into the Big Ten's market a little and its a good market.
Colorado ends up in the SEC or B10 eventually. Maybe Arizona also. Arizona State doesnt have the akademix for the B10 but could possibly join the SEC.
NC State and VT have to hope for the B10 but may wind up in the ACC/B12 leftover league. Miami could be in the leftover league, B10, or SEC. My guess is the B10. The SEC probably wont want 3 Florida teams and may feel that they already own South Florida with UF and FSU.