I know that some mixers have this functionality built in to their compressors, I believe also some A&H consoles actually.
I learned about the effect a linked compressor has on the stereo image only recently (learned this from Dave Rat). But it’s makes quite a big difference I’ve noticed.
Linked compression tends to create more of a centre focused sound, that more noticeably ducks/compresses.
Unlinked retains a wider stereo image, that’s more ”open” and leaves more of the reverb intact as an example.
Surely there’s more to it, but this is what I’ve learned about it so far.