You're looking at 4 different items in combo really.
Basic gains (Pitch/Roll)
Atti gains (Pitch/Roll)
Vertical
Yaw
My Vertical & Yaw are the same value, then the Atti gains are the same as each other & lastly the Basic's are the same as each other.
Trial and error will be the case t make sure your basic gains keep your craft stable, Atti gains are going to be how "you" like the stick input feeling & Vert/Yaw are pretty easy being close to Basic gains to just make sure it sticks when at center stick.