entity.frog.tounge sound has no subtitles

Can confirm. You can use the following command to reproduce this issue.

/playsound minecraft:entity.frog.tounge master @a

It is also misspelled.

@unknown, is that worth creating a separate ticket for?

@unknown I'd say yes. Edit: ticket for that issue is MC-249164.

This also applies to the "step" sound:

/playsound minecraft:entity.frog.step master @s

@unknown: That is MC-249141.

Awesome, thank you @unknown!