Sagarin's rankings put the WAC 23rd (MAC is broken into two divisions). The 6 Major conferences will likely get 32 of the 36 at-large, the 4 "high Mids" will probably get the other 4.
CONFERENCE CENTRAL MEAN SIMPLE AVERAGE TEAMS WIN50%
Majors
1 BIG 12 = 86.36 86.73 ( 1) 10 86.65 ( 1)
2 ATLANTIC COAST = 84.75 84.83 ( 2) 15 84.81 ( 2)
3 BIG TEN = 83.37 83.05 ( 4) 14 83.14 ( 4)
4 BIG EAST = 83.31 83.30 ( 3) 10 83.30 ( 3)
5 SOUTHEASTERN = 81.74 82.02 ( 5) 14 81.90 ( 5)
6 PAC-12 = 80.76 80.85 ( 6) 12 80.83 ( 6)
"High" Mid-Majors
7 AMERICAN ATHLETIC = 78.64 78.58 ( 7) 12 78.63 ( 7)
8 ATLANTIC 10 = 75.79 75.86 ( 8) 14 75.85 ( 8)
9 MOUNTAIN WEST = 74.73 74.67 ( 10) 11 74.72 ( 9)
10 WEST COAST = 74.05 74.77 ( 9) 10 74.25 ( 10)
borderline High Mid-Majors
11 MISSOURI VALLEY = 73.64 73.34 ( 11) 10 73.40 ( 11)
12 MID-AMERICAN(east) = 72.49 72.13 ( 12) 6 72.21 ( 12)
13 COLONIAL = 72.08 71.94 ( 13) 10 71.96 ( 13)
14 MID-AMERICAN(west) = 71.57 71.46 ( 14) 6 71.46 ( 14)
"Low" Mid-Majors
15 IVY LEAGUE = 70.67 70.64 ( 15) 8 70.64 ( 15)
16 SUMMIT LEAGUE = 70.59 70.38 ( 16) 8 70.42 ( 16)
17 SUN BELT = 69.88 69.95 ( 17) 12 69.93 ( 17)
18 CONFERENCE USA = 69.16 69.43 ( 18) 14 69.34 ( 18)
19 METRO ATLANTIC = 69.10 69.12 ( 19) 11 69.12 ( 19)
20 SOUTHERN = 68.97 68.55 ( 21) 10 68.69 ( 21)
21 HORIZON = 68.77 68.94 ( 20) 10 68.89 ( 20)
22 OHIO VALLEY = 68.04 68.08 ( 22) 12 68.06 ( 22)
23 BIG WEST = 68.00 68.06 ( 23) 9 68.03 ( 23)
24 WESTERN ATHLETIC = 67.60 67.49 ( 24) 8 67.55 ( 24)
25 PATRIOT = 67.38 67.46 ( 25) 10 67.44 ( 25)
"bottom" mid-Majors ... "first four" competitors -- which is actually a bonus since it's 50-50 you win a game
26 AMERICA EAST = 65.89 65.96 ( 27) 9 65.91 ( 27)
27 BIG SKY = 65.86 65.65 ( 28) 12 65.71 ( 28)
28 ATLANTIC SUN = 65.68 66.01 ( 26) 8 65.94 ( 26)
29 BIG SOUTH = 64.85 64.65 ( 29) 10 64.74 ( 29)
30 SOUTHLAND = 64.08 64.21 ( 30) 13 64.16 ( 30)
31 NORTHEAST = 63.38 63.12 ( 31) 10 63.17 ( 31)
32 MID-EASTERN = 58.99 58.95 ( 32) 13 58.97 ( 32)
33 SOUTHWESTERN = 58.13 58.28 ( 33) 10 58.21 ( 33)
WAC Schools (GCU and NMSU have "High Mid-Major" rankings, would be middle of such conferences)
109 Grand Canyon = 75.60
115 New Mexico State = 75.08
163 CSU Bakersfield = 71.67
206 Utah Valley = 69.22
267 Seattle = 65.62
294 Kansas City (UMKC) = 63.38
311 UTRGV = 62.42
341 Chicago State = 56.92
https://www.usatoday.com/sports/ncaab/sagarin/