Forza Horizon 4 on PC has all the commands on the keyboard and some of them are present on the steering wheels.
This is the list:
WASD – Acceleration / Brake / Turning
E – Shift Up
Q – Shift Down
Space – Hand Brake
Shift – Clutch
R – Rewind
T - Show data above windscreen
TAB – Change Camera View
Enter – Activation
M – Map
H – Horn
P – Photo Mode
C – Activate ANNA
ESC – Paus
