As OP may I just say for a moment, I don't think it 's just about being correct in pronunciation, it's also about the twat factor or pretentions/delusions of superiority showing off about one's well-travelledness
Major rule is people from the original country or of that nationality or children of those do not sound Twatty usually
1] Kenya
eg when Posh old colonial types say KEEEENYAR it's a snootyism, I know because I'm considerably superior to you (or YOW).
"ken-ya" to me sounds unpretentious.
2] PAREEEE
No excuse for this unless you're French or saying 'Gay Paree'
3] Melay for melee
Not twatty imho
4] CHIL - AY
Fine for Chileans. Chilly = fine for most people, it's the trad way for the English to pronounce it. It may be wrong but it passes the twat test.
Chil - e (e as in elephant) is also fine and not twatty imho. But it can be if it leads to facial distortion and chin jutting. Bil has been to CHILE (he is so full of himself...) and can't say CHIL-LE without facial spasm. It's wrong. One should relax and sound calm. Pronunciation should not start to look like Torette's syndrome.
5] NiGRAW AW AW AW AW
is wonderful and should be said by everyone out of respect for the noble people of Nicaragua, one should ideally pretend to be Benecio del Toro when delivering Nicaragua
6] Lapsing into French and Latin
ok for Boris (can't help it) fine for scary teacher all poly glots imo can pronounce how they like.
Not ok for that old bloke in the Archers because it's snooty.
I don't like the use of pronuncation to be snooty that's all.
7] Choriztzo, I have no confidence about that. I try not to say it at all
8] PAR ME JANNNNNNNNNNNNNNNNNNNN
Americans also say Parmesan like this, this is entirely unforgiveable and is the worst of all possible worlds, my step mother says this and it makes me weep