Creating a generic UI glowing effect.

I've been trying to make a generic glowing effect that will work on any type of image ill throw it on.
But it turned out to be more problematic that I hoped.

*I am working with the HDRP on Unity 2019.4.20f.

From what I know the classic way is having a sprite and an emission map that will tell what areas should be glowing. But I don't want to make one of each sprite, if I have lets say 50+ its bit cumbersome.

Another option I saw is by using Unity's Outline or Shadow script, but it doesn't have that glow effect, makes it mostly look blurry.

What seemed the best option was making a shader that creates the glow effect on a certain sprite, and if that works turn it into a generic one. So something like passing in runtime a sprite to the shader and creating a material for the Image component and have it glow.

Yet, I am sure this is over thinking and there must be a better way to do this.

Any help would be much apricated.
Thanks