

Hawkeye and Echo both heavily feature Fisk, so those should be watched. Can’t think of much other than that if you’ve watched the original three seasons of Daredevil as well as Punisher. Daredevil appeared in the latest Spider-man and She-Hulk, but those were more like cameo appearances.
Part of my enjoyment is not necessarily knowing what is coming next so that I can experience it for myself. Spoilers won’t completely ruin something for me, but it is taking something away from the experience.
Also, to everyone out there, just tag the spoilers so people can make up their own mind what they read. It takes a bare minimum of effort to do so. It’s akin to holding the door open for someone behind you, it’s not going to be the end of the world if you don’t, but it can make someone’s day a fraction better if you do.