Here is a pic of my paddle shifter. It is an evolution of of one my dad created in the mid 80’s. Basic design is normal. Butterfly paddle hooked up to a push/pull cable.
But most guys have a rod that is as wide as the steering wheel that they take their fingers off wheel and pull with right hand to shift up and with left hand to shift down.
Ours is same idea but is much smaller so I can keep more of my hands on the wheel and just use my fingers to shift. I added the red plastic “button” so that during downshifts and braking when you are being thrown around pull with left finger and push with right thumb. This gives more control. Upshifting is just down with pull of fingers.