first of all, i’ve never seen any, not even Apollo for Reddit, that did live styling. The preferred method has always been to show the markup in the editor so the user can modify it before posting.

second: what markup are you wanting there to be? existing, end even past editors, typically only ever feature the most commonly-used markup in shortcuts simply due to space limitations in the interface. if you’re looking for shortcuts for things like tables and other advanced formatting, i doubt you’ll find that anywhere just because it’s uncommonly used and other shortcut bottoms would take UI/UX priority.