Toko
Telepathy - She likely has some measure of shielding/defense against telepathy, given that she and her brother have a form of telepathy, which hasn't been fully explored. Lemme know if he's got the hat off, and I'll post some direct thoughts for him to pick up.
Clairvoyance - I'm not sure on this one, so this would have to be a case-by-case basis.
Confusion - I'm pretty sure there's been illusions used in Uraboku that the Zweilts were affected by, so I figure this'll work on her.
Mind Door - Like the telepathy, I'm not sure on this one, especially since she theoretically has memories of her past lives, that are sealed away.

Luc
Telepathy, Clairvoyance, Confusion - Go for it, though the True Wind Rune might try blocking the first two.
Mind Door - Yes on part A, no on part B.

Omi
Telepathy, Clairvoyance - Omi has zilch for mental shields, but beware that telepaths utterly freak him out (thank you Schuldig).
Confusion - Omi's likely to become more dangerous if you confuse him, so I'd probably warn against this one.
Mind Door - No on part B, but if he wants/needs to try for Part A... just beware it won't be pretty.

chaos
Telepathy, Clairvoyance, Confusion, Mind Door - Sorry, chaos is far too powerful to not have heavy shielding.

Hisoka
Telepathy, Clairvoyance - Being a psychic himself, Hisoka's strong enough to shield in most situations, but if Raz is able to get through, there's a high chance of feedback.
Confusion - Probably not, with Hisoka's shielding.
Mind Door - Like Omi, this wouldn't be pretty. Also, with his shielding, he's not likely to get in.

Luka
Telepathy, Clairvoyance, Confusion, Mind Door - Luka's never shown any signs of having psychic abilities or resisting them, so I figure this would be go?

Mikan
Telepathy, Clairvoyance, Confusion, Mind Door - Hello, meet her Nullification Alice. So this would be a 'no'.

Mokona
Telepathy, Clairvoyance, Confusion, Mind Door - I thin Mokona might break Raz if he managed to get into his mind, so...