Any good software that could find duplicated or unique files
I am looking for a software that could satisfy the three following situations: A) it could find duplicated files with the identical file name or B) the identical file but different file name, format or file type. Video files would be an example of that, or compare files in folders A and B. C) There are some files found in folder A that are also found in folder B, but I want to find files that are unique in folder A or B. In other words, it is the inverse of finding which files are identical in both folders.
I used duplicate cleaner for this, but it could not satisfy situation C. Any software for Window 11 PC, best to be free or open source (paid is also ok), that could satisfy all three situations and has some of the feature that duplicate cleaners has, such as marking all files outside of Folder A that have a duplicate inside the same folder?