The 6 year old asked me which team had the most rivals, and I said probably Notre Dame. They are my FIL favorite team, so he asked why, but I didn't feel like going down the road that his Catholic pappy who didn't go there is a big part of it.
Then he asked who had the least. My thought (limiting it to P5 schools) is that obviously helmets or schools with any amount of sustained periods of success are out. So schools that maybe don't have a ton of football success, but have some basketball carryover like Indiana, UNC, Kentucky or Purdue are out. Then private schools, and their fake academic standards are out. Then schools with multiple primary rivals like Minnesota and NC State are out.
So who is left? My best guess was Washington State. Thoughts?