Here's every player with over 33% ownership, 2015-21
69% 2017 RB Kareem Hunt KC $10 - 
RB4
65% 2021 RB Gus Edwards BAL $11 - 
IR
57% 2019 WR Josh Gordon NE $6 - 
WR89
57% 2015 WR Davante Adams GB $9 - 
WR65
51% 2017 WR Chris Hogan NE $5 - 
WR61
48% 2021 WR Marquez Callaway NO $5 - 
WR43
47% 2020 RB Antonio Gibson WAS $9 - 
RB14
45% 2021 RB James Robinson JAX $16 - 
RB24
44% 2019 QB Lamar Jackson BAL $12 - 
QB1
43% 2019 RB Chris Carson SEA $18 - 
RB12
42% 2019 RB Duke Johnson HOU $9 - 
RB30
41% 2018 RB Peyton Barber TB $8 - 
RB31
40% 2016 RB Christine Michael SEA $4 - 
RB35
40% 2019 RB Devin Singletary BUF $8 - 
RB33
37% 2015 RB Doug Martin TB $12 - 
RB4
37% 2015 PK Josh Scobee PIT $2 - 
K37
37% 2018 WR Marquise Goodwin SF $13 - 
WR83
36% 2015 WR Julio Jones ATL $26 - 
WR2
36% 2018 WR Keelan Cole JAX $7 - 
WR79
36% 2015 WR Eddie Royal CHI $4 - 
WR91
36% 2018 RB James Conner PIT $4 - 
RB6
36% 2016 RB Spencer Ware KC $8 - 
RB16
36% 2015 RB Ameer Abdullah DET $14 -
 RB44
35% 2018 RB Royce Freeman DEN $16 - 
RB46 
35% 2021 RB Sony Michel LAR $5 -
 RB31
35% 2017 RB Dalvin Cook MIN $17 - 
RB73
34% 2015 QB Sam Bradford PHI $13 - 
QB23
33% 2016 WR Devin Funchess CAR $6 - 
WR84
On average that's 4 players per year: 2.3 RBs, 1.3 WRs, and 0.4 others. Usually cheap to mid-range guys who moved their way up the depth chart after the pricing was set. With mixed results, e.g. Kareem Hunt had a huge year in 2017 after Spencer Ware got hurt, while Gus Edwards joined JK Dobbins on IR before the 2021 season started and missed the whole season.
 
Spreadsheet with 2015-21 ownership data, with some inconsistent formatting.