What are the different feet used on MacBook Pros

I keep feet in stock for replacements but have no guidelines to know which ones are used on different machines.

There are the older ones with a large center portion, newer ones with a smaller center. Both of these have a single pins. But I also have some with two centering pins.

Does anyone know where I can find a definitive guide on which feet to use and do the newer machines use different feet? The retinas may be using different feet.

Apple has this guide for replacing the older feet: https://support.apple.com/en-us/HT202450

iFixit sells these feet: MacBook and MacBook Pro Unibody Plastic Feet