>>44145965They're sold by a bunch of different sellers and rebranders on AliExpress. The box says Joypad for N-Switch. There's a clear SNES themed version too, which is actually what I wanted to get, but they were out so I got these.
They're also sold on Amazon for double the price ($50-60), which might be worth it if you need it immediately. But if you have working Joycons, I'd say buy the $25-$30 ones on AliExpress.