The Aprilia MotoGP bike has grown a rear wing(let) in their wind tunnel.
It is minute ánd down behind the rider but it is said to work on track too albeit needing some fine tuning.
(https://cdn.visordown.com/styles/v2_normal/s3/field/image/Screenshot%202022-05-28%20at%2008.02.25.png)
Imo ány spoilers whether front, side, bottom or rear should be banned per next season as it has introduced the F1 conundrum of faster lap times and less overtakes.