I've been looking in vain for a guide of style or of structure of pages, so I wanted to ask if I got it right (or discuss about my section order as a possible format):
Here how (I'm of course influenced by Wikipedia and by the Marvel Database, with my own preferences)
Tags (deletion, stub, adj/infl, etc.
Infobox
Section with header: out-of-universe: major elements about creation and re-use (expansion of the infobox + others
History/background (in-universe? out-of-universe? I'm in favor of in-universe but that's really past Wiki/Fandom experience talking here). Subsections for other multiverses (Marvel, Doctor Who), either treating the entities as alternate versions, or alternate manifestations, no matter what is known of the version on that aspect (for example Marvel Shub-Niggurath hasn't been stated to be multiversal/omniversal, so it's still considered a 616 (main reality) character on the Marvel Database.
Behind the Mythos, Notes, similar section relevant to out-of-universe material, depending on the page.
Links and references: can be divided betweeen external links, footnotes, see also