A way to replicate Bubble's Tooltips

General question, has anyone hacked a way to use Bubble’s Tooltips (the ones you can use via “Icon Element”).

Haven’t looked too much into it myself, but I was just wondering if anyone else had thought of this.

It seems as if they are browser-type tooltips (aria). I have tried to put my own simple aria tooltips in, but haven’t had any luck.

Using group focuses