These. There is no excuse for these not to be Fairy.
Manaphy is based on sea angels. Is fairy fitting? Yes. Would it be broken? Yes. But also making it Water/Fairy would give it SOME reason to be different from Phione, and Phione getting even more cucked would be funny.
Victini I just feel would be better Fairy, sue me. It jsut feels right. In any case slapping Psychic on it for no reason isn't much better.
I didn't think Cresselia should be Psychic/Fairy until after Lunala's type was revealed. Since it's not fairy, it really does make sense to give it to Cresselia. It's supposed to be Darkrai's foil, but it's weak to it.
I'll literally never forgive them for not making Celebi Grass/Fairy. Magical abilities explain timetravel better than psychic ones do, and it literally IS a fairy.
On the flipside, Jirachi ought to keep the Psychic typing since it's associated with space, and more importantly because it has a giant third eye on it's tummy which is kind of a Psychic thing.
Meloetta would work as a Fairy type, but due to it's white pallor and it being designed around sound based attacks like Hyper Voice, I think Normal is better.