Similarity Score on User Compare Page

The current user compare page offers many stats between the users:

• Overall sum of streams, minutes, hours, tracks, …

• Similar artists of the top 250

• Common genres

• Listening clocks comparison

• …

However, I think on simple thing is missing: A simple number (potentially a percentage value) which is a calculation of the similarity of the two users including their common tracks, listening clocks, artists, …

This should be just one number representing basically the whole page in one score and I would therefore call it: Similarity score!

The exact calculation is currently very open, so feel free to add random ideas in the comments which could be included in this calculation.

Why would this be necessary? You could very quickly get the info if the other user would be a nice friend or soulmate.