From my 13x10 proposal (
https://csnbbs.com/thread-904689.html):
Big Ten: Boston College, Syracuse, Penn State, Pittsburgh, Temple, Rutgers, Ohio State, Cincinnati, Michigan, Michigan State (States: MA, NY, PA, NJ, OH, MI)
ACC: Maryland, Virginia, Virginia Tech, North Carolina, Duke, NC State, Wake Forest, Clemson, South Carolina, West Virginia (States: MD, VA, NC, SC, WV)
SEC: Florida, Florida State, Miami, UCF, Georgia, Georgia Tech, Alabama, Auburn, Mississippi, Mississippi State (States: FL, GA, AL, MS)
Great Midwest: Indiana, Purdue, Notre Dame, Illinois, Northwestern, Wisconsin, Kentucky, Louisville, Tennessee, Vanderbilt (States: IN, IL, WI, KY, TN)
Big 8: Utah, BYU, Colorado, Nebraska, Kansas, Kansas State, Missouri, Iowa, Iowa State, Minnesota (States: UT, CO, KS, MO, IA, MN)
SWC: Texas, Texas A&M, Texas Tech, TCU, Houston, Baylor, Oklahoma, Oklahoma State, LSU, Arkansas (States: TX, OK, LA, AR)
Pac: UCLA, USC, California, Stanford, Washington, Washington State, Oregon, Oregon State, Arizona, Arizona State (States: CA, WA, OR, AZ)
The 6 "Minor" Conferences:
MWC: Hawaii, San Diego State, Fresno State, San Jose State, Boise State, Nevada, UNLV, Colorado State, Air Force, Utah State (States: HI, CA, ID, NV, CO, UT)
MAC: Akron, Kent State, Ohio, Miami Ohio, Toledo, Bowling Green, Central Michigan, Eastern Michigan, Western Michigan, Ball State (States: OH, MI, IN)
Lambert: Massachusetts, Connecticut, Army, Navy, Buffalo, Liberty, Old Dominion, East Carolina, Appalachian State, Charlotte (States: MA, CT, NY, MD, VA, NC)
AAC: SMU, North Texas, Texas San Antonio, Rice, Texas State, Tulsa, UTEP, New Mexico, New Mexico State, Wyoming (States: TX, OK, NM, WY)
C-USA: South Florida, Florida Atlantic, Florida International, Georgia State, Georgia Southern, Coastal Carolina, Middle Tennessee, Memphis*, Western Kentucky, Northern Illinois (States: FL, GA, SC, TN, KY, IL)
Sun Belt: Louisiana, Louisiana Tech, Louisiana Monroe, Tulane, Arkansas State, Southern Mississippi, South Alabama, UAB, Troy, Marshall* (States: LA, AR, TN, AL, WV)
*Memphis and Marshall switched to satisfy maximum of 6 states per conference and maximum 2 conferences per state. I had to break the contiguous state rule a few times (Lambert, AAC, and Sun Belt). There really isn't any reasonable places to put the oddballs unless you wanted to put "big guys" and "little guys" together. Feel free to juggle if you wish.