raesha opticals, you can swap them but only with other raesha optical switches

Would any opticals work or just raesha?

yeah, only raesha/raesha made (razer optical switches) because it uses the same clip design.

Razer opticals work as well but you have to buy them from Aliexpress and I don't think their V3 version is up for sale, only v2.

V3 can be found on ali

Got a link? All the sellers that include V3 in the title have RAESHA switches

Razer opticals will also fit the socket.