There’s a lot of different variants of Aramaic that are not in the database, and there is the some Aramaic like the Zohar (where a lot of songs come from) Zohar - Wikipedia that are not a specific dialect.
I think that having a language Jewish Aramaic would be the perfect solution for adding additional dialects of Aramaic in different eras.
I’m not familiar with these languages, but the ticket adding (I think?) the existing Amaramic language type seems to have been made with Zohar in mind:
The issue with this is that we follow ISO for our languages tmr is not the code for a generic Jewish Aramaic, but for specifically “Jewish Babylonian Aramaic” - it seems the Zohar language has no actual ISO code so using tmr might still be the least bad option for now though.