Rating algorithm?

Question

Algorithms

There are n photos, you need to find the top k most "beautiful" of them and make a rating list (a list in which the photos are arranged in descending order by beauty) for these k photos.
Top k beautiful is determined by one user by making selections between two photos.
Example: there are 500 photos of cats, from which you need to determine the 20 cutest and from these 20 make a rating list in descending order of cuteness.
I hope that I have explained it clearly.

Answer 1

And what, apart from the number of photos (200->500), has changed compared to the original question, to which you have already received an answer in the form of a ready-made algorithm?

Answer 2

https://en.wikipedia.org/wiki/Rating_Elo#Calculated...

Answer 3

you don't have to put them anywhere. You just need to identify the 20 cutest.

Look for the 20 most similar ones.