It's UNC (70% conference win % last 5 years), Duke (70%), and Virginia (81%) in Tier 1.
Louisville (67%) is Tier 1.5 with Pitino gone, but Mack is a big get (8 tourneys and 8 20+ win seasons in 9 years).
Tier 2 is probably Syracuse (57%), and Notre Dame (57%). Teams with good conference records and a strong recent (and not so recent) history of tournament appearances.
Tier 3 has Miami (57%), Clemson (50%), Florida St. (51%), and maybe NC State (43%) because of their recent tournament appearances.
Tier 4 is everyone else. VTech (38%,but 30 wins past 3 years), Pitt (36%), Georgia Tech (34%), Wake Forest (29%), and Boston College (19%)
Pitt has a long way to go in recovery to be considered a top ACC program. 50% conference ball only gets Pitt in the conversation for a 3rd Tier (7-10) ACC program. It will take years (5+) of success before Pitt can sniff recognition of a top 5 caliber ACC program.
Personally, considering the dumpster fire that he inherited, I'd be happy if we can consider Pitt as a 3rd Tier ACC team 4 years from now.