Sounds as if you play as most unimaginative character that does everything in a dullest way possible. What's the point of playing tabletop then?
I mean half of the fun of tabletop rpgs is exploring the possibilities and creativity (for me).
Name of the app is kate.
It only does light formating and syntax highlight.
Are you looking specifically for markdown editor that just doesn't hide markup?
From the list you gave my understanding was that you are looking for higlight and that's +- it.
There are multiple markdown specific editors that do it like ghostwriter, retext, or even emacs with markdown-mode (iirc it does rendering without hiding markup, auto-formats tables, makes links clickable, etc.)
They aren't just general purpose tools like tesseract are, they can be additionally trained to recognize handwritten text to become much-much better at their task. For example my kobo reader has builtin offline ocr and it works incredible, almost too good.
Also I can't recognize half of the text as well. 😄
But it's not a picture of your mother (also qUaRaN forbids depictions of people) it's a book of random bullshit made by a warlord thousand years ago. And noone defaced nothing in front of anyone their point was that muslims allowed to ignore laws and try to use some savage "laws" to punish people that disagree with them.
It's just fun to play with, there is no "need".