Well pretty much anything says for external use only so they aren’t recommended. But lots of people use oragel or other benzocaine or lidocaine gelson their clits for the numbing effect.
A better option might be male delay creams, which are often benzocaine too, as they are more designed for skin rather than mouths.
This stuff is Lidocaine based, although it’s a spray it seems effective.
Would love other’s recommendations though!