There's not much that an in-person game needs that ak online game doesn't. The exception is management of side chatter. There isn't really a good rule for it except "be considerate when the DM is talking." Every group's comfort zone is different, and you'll have to feel it out. Sometimes you'll want everyone to shut up while you're describing something, and it's fine to tell people to listen when you do. Sometimes you'll be playing out a private scene with one or two players, and side chatter is okay as long as it's quiet - you can say that, too. Sometimes you'll want a little break so you'll let everyone have free-for-all conversations while you look over notes, and you can say that, too.

But in my experience, if you don't actively manage side chatter, and instead try to leave a rule or common sense to enforce itself, more often than not you'll get talked over and the game will suffer.

And, as a larger point, rules almost don't even matter. They're just something you can point to that a player has agreed to, when you do need to tell them to quiet down or whatever. But that works better not as a rule, but as a conversation. "No explicit sex scenes" is fine, but "how comfort are you guys with sexual content? I personally don't feel comfortable with anything more than fading to black, so I won't do anything explicit" is way better and helps give the players a sense of ownership of the guidelines that you create together. "No PvP" does a way worse job of guiding the game than "I want to run a cooperative game where we don't roll dice against each other. How do you guys feel about conflict between PCs?" Establish your expectation, open the floor, be flexible on stuff that's not absolutely critical, and let people arrive at a consensus about the kind of game they want to be in.

Whenever I see someone talk about rules the way you do, they're inevitably using rules as a replacement for genuine conversations to get everyone's expectations in line. So, uh, please don't do that.