All sats have an ordinal number (and a name, and a few other representations), but because inscribing a sat requires a relatively expensive transaction, only a vanishingly small fraction of all sats will ever be inscribed.

You can use the ordinals.com block explorer to search for sats using the differ representations. The twobithits sat is coming in 2025. Relatively soon!

https://ordinals.com/sat/twobithits