Here are the most popular midfield selections:
Midfielders
47.6% Swan
45.2% Ablett
40.5% Gray
35.8% Krakouer
35.7% Martin, D
33.8% Saad, Adam
31.6% Lambert
31.1% van Berlo
31.0% Heeney
30.5% Pendlebury
29.3% Fyfe
28.5% Freeman
27.3% Rich
25.7% Newnes
23.3% Anderson
21.7% Vandenberg
21.0% Lumumba
21.0% Selwood
20.0% Boekhorst
19.5% Cockatoo
18.3% Steele
18.2% Hodge
17.5% Cripps, P
17.3% Griffen
17.2% Ellis-Yolmen
17.0% Goddard, B
16.9% Bontempelli
15.6% Deledio
14.1% Dangerfield
13.3% Mitchell, T
13.2% Beams, D
12.3% Rockliff
12.2% Burgoyne
12.1% Swallow, A
11.9% Newton
10.0% Laverde
9.0% Wells
8.9% Brayshaw
8.9% Pearce, C
8.9% Bennell
8.7% Steven
8.5% Parker
8.5% Wines
8.5% Kennedy, Josh P
7.6% Neale
7.5% Dick
7.5% Mitchell, S
7.5% McKEnzie, D
7.2% de Goey
6.9% Maynard
6.7% Zorko
6.0% Thomas, D
6.0% Priddis
5.8% Ziebell
5.5% Petracca
5.4% Langford
5.3% Mayes
5.1% Miller, T
5.1% Heppell
5.0% Sloane
4.8% Watson
4.7% Hallahan
4.7% Biggs
4.7% Cotchin
4.6% Vlastuin
4.5% Wagner
4.4% Beams, C
4.3% Blicavs
4.2% Boak
4.0% Harvey
4.0% Crouch, B

The Swan/Gray/Martin stats are hopefully because these guys have been selected as FWDs, rather than MIDs.
Of the true MIDs, Ablett still leads all comers, from Pendlebury and Fyfe. Rich is in a surprisingly high number of teams, followed by Selwood and Griffen. These names probably make up most of the top-end midfielders for the cookie-cutter teams this year it would seem.
Saad, Lambert and Krakouer are popular as cheapies, not sure that the 36% of Krakouer holders are going to be still onboard if he's not named for R1 though.
Van Berlo surprises me as a popular pick, sure he presents some value on his start price but his best season ever was an average of 88 and that was way back in 2011.
Injured players such as Petracca, Biggs and Crouch are still in an unreasonably high number of teams, suggesting that either autofill is dudding people or there are a lot of coaches who haven't been paying attention over the off-season.