You don’t really need any add-ons for this. I’m using tippy.js - a JavaScript tooltip library - for my template:
This example is part of an etymology search I implemented for medicine (similar to the Amboss add-on).
I also wrote a script that converts strikethrough text (a style I would never use in my cards) into tooltips. So it’s really easy to crate them with default Anki formatting:
Input
- Auf eine Notiz rechtsklicken und “Notiztyp wechseln”.
= Change Note Type
Output
Maybe I’ll crate a guide on how to include such libraries in your templates sometime soon. I’m currently abroad, so I can’t do much from my phone.