Here are 6 prototypes from a new company that got the Sonic classic license in 2020. It's "Zen Monkey" and they make usually pins, patches and keychains. In this case, they published these pictures to the Big Bad Toystore.com , for their upcoming Sonic selections. However...they're just art.
That's why it's on this page of prototypes--none of the items are real. The Sonic on an orange circle is a keychain, Super Sonic is a patch, and the rest of the items will be metal/enamel pins.
Pretty much everything here is neoclassic as well. Arguably the 'getting ready to run' Sonic in the top left is actually classic but it looks like that old stock art may have been reworked a little bit. If they do a good job (which seem fairly easy with pins) this will be a nice collectible bunch of pins to get. Cheerful flying Tails hasn't been done before as a pin, & the Knuckles pose looks nice too. If/when these get made, they'll appear on the appropriate pages of Gear.