Equestrian will be interesting. They need to get to 40, but only 18 schools still have teams (UT-M is shutting it down). 4 in the SEC (A&M, USCe, Auburn & Georgia) and 4 in the BXII (Baylor, K-State, TCU & Okie State). 3 from the IVY (Brown, Cornell & Dartmouth).
Seems like a pretty expensive sport to add which would rely on mostly sponsorship and BMDs. Most ADs are struggling financially, outside the SEC and maybe the B1G.
Would it surprise you to know the BigXII has only 3 Men's Swimming & Diving (Sips, TCU & WV) and only 5 Womens (Iowa State, Kansas, Sips, TCU & WV)?!
There are some DII schools - UMinn - Crookston, Seton Hill, Stonehill & West Texas A&M and 13 DIII schools.
I could see Tarleton adding Equestrian.
By comparison, there are 61 Women's Gymnastics teams. 8 SEC and 3 BigXII, 10 B1G.
I think if A&M added Gymnastics, we could be a top team within just a few years.