OK, so, for future reference I'm going to compile the Stalker samples with what we know to determine any stalker-y folk.

Purple Shred: The most obvious. Without any consideration for any other evidence, the four Pokemon it could most likely be are:
10: Gorlin the Swalot
20: Garen the Malamar
29: Franny the Mismagius
30: Rola the Lurantis (listed as purple in dex)
38: Buldaren the Exploud
40: Jaxie the Gothorita (listed as purple in dex)
47: Misa the Mienshao (listed as purple in dex)

Of these, Franny is almost certainly out due to her aid to us previously nailing RttnCrps. Almost certainly. Almost. Also, the way Purple Shred is referred to, as opposed to fur, makes me doubt Misa as well.

I think Pokemon Trainer Sarah covered the Black fur already, (I would like to make one adjustment to that list: Pignite have fur on their tails so you could add 9: Ferris the Pignite to the list), so onto the Beige fur, which is surprisingly short (if I didn't miss anything).

11: Fen the Linoone
12: Yandil the Smeargle
16: Vella the Buneary
45: Tashy the Furret

I do not need to say Tashy is innocent 999,999 times out of 1 million so let's end it there. I listed her for completion reasons.

Now: I should point out that we only know that Kanja triggered mission disclosure penalties, while Stalkers beforehand in previous games did not. It may be that this penalty is unique to her, so let us not assume.

Uh, we should also probably contact one of the Police Pokemon with the grim news that Kanja was a Stalker.