Here's the link to the #12 ranking for Jim Boeheim. At the bottom of the page you can see the list so far from #50 to #12.
Here are the ACC coaches already mentioned:
12. Jim Boeheim, Syracuse
14. Tony Bennett, Virginia
16. Roy Williams, UNC
25. Jamie Dixon, Pittsburgh
28. Jim Larranaga, Miami
38. Buzz Williams, Virginia Tech
45. Mike Brey, Notre Dame
If you add the not-yet-mentioned Coach K and Rick Pitino, that's 9 ACC coaches, which is not bad. (It's a bit skewed, with 1 new ACC school, 3 new-ish ACC schools, and new-to-the-ACC Buzz Williams.)
ESPN's criteria for ranking is annoyingly unclear right now. The articles keep saying that current performance is being evaluated and legacy is ignored. As for the Top 11, who's left? Coach K, Rick Pitino. The 2014 Final Four coaches (Kevin Ollie, John Calipari, Bo Ryan, Billy Donovan) plus three 2014 Elite 8 coaches (Sean Miller, Tom Izzo, John Beilein). Gregg Marshall, Bill Self. That's 11.