This reminded me of a software tool that was available years (decades) ago that would convert Illustrator 1.1 files to FrameMaker graphics. It was probably a Mac-based tool when FrameMaker had a Mac version. I also think it was possible to ungroup graphics that were imported in a particular format, maybe CGM? Maybe one of the other FrameMaker "senior citizens" remembers.
With Polylines you can create someting like this balloon in an anchored frame. (You can also save such a balloon on your reference pages, so that you can copy the balloon from there, when you need it.)
Then insert a text frame in the balloon to hold your text.
I find it very good to keep all text in FrameMaker and not in a graphics file. Then the text is always formatted consistently, and it's easier to get it translated.