Here's one that I have used on occasion and that does a solid job, free too
https://dupeguru.voltaicideas.net
Gemini from macpaw is another one that I have tried many times.. fancy interface and does a good job too. Has a 'similar' files option and other bells and whistles like medals for clean up and such. All part of the macpaw design system. No hate.
I would recommend Gemini also. Does cost $$ though. If you buy into setapp subscriptions, made by the macpaw team, you'll get Gemini in the package. Try using free ones first. The tech behind each duplicate file finder application is of course different and I'm not one to definitive say one is the master of them all.