Oh, huh, this is really interesting and not something I'd ever thought about before! I've certainly noticed fandom's love-affair with third-person-limited, to a far greater extent than published fiction. My hypothesis is that people like it because it allows a great deal of emotional connection to a character, without putting it into first-person: fandom is big into giving the reader FEELS, and I know plenty of people (including myself) are for some reason wary of reading first-person.

I do love when people play with POV, and I've read some fascinating fics with non-standard POV. I love the POV you call third-person personal, possibly because it's the voice many fairy tales are told in, and I grew up on fairy tales. (Jonathan Strange & Mr Norrell is one book that does a fantastic job of that POV).

Third omniscient is one I'm wary of when writing, and I think probably a lot of other people are too, because it's too easy for that to turn into a head-hopping multi-person version of third limited. Which -- okay, Jane Austen does that, and makes it work for her, but she's a rarity.

Anyways. GO YOU on changing up the POVs you write in! I definitely support more variety, even though I do love third-limited.