It is a great question, because you see more of your conference than out of league games. Thus game planning vs. the other opponents players, are most frequent in the scouting reports. Also, for most of us, recruiting is on the East Coast and Southern U.S. mainly. So therefore, you see these same H.S. students in camps, games.
If you split the country up into thirds, maybe there are 85 clubs you compete against for the talent in your region.
My deduction would arrive at the 14 other ACC schools primarily, with another approximately 70 plus or minus lesser competitors. Naturally if you recruit top 25 every year; S.C., Tenn., UConn. are going to be familiar faces. Speaking from a G.T. perspective.