Live Text is a game changer. I use it regularly on the Mac and the iPhone.
I don’t think I use a single one of the others.
I wish there was a category for “No I haven’t used it, but I really want to!” Several of these struck me as greatly useful, but I just haven’t taken the time out to actually try them. Or because I am using an intel Mac, the feature doesn’t work for me, but I look forward to using them at some time after I get on Apple Silicon.