I don't think it is feasible for me to make a list of what Id prefer not to see as player types, so i would treat each case on a basis of if it made some sense and would fit in well. If it would obviously cause problem or made no sense I would not allow it, there are some certain ones I see being hugely unlikely Sabbat orientated vampires for example, Fae, Hunter's, Mummys and Technocracy Mages.
There are also certain things I would never in a million years allow but I sort of feel that these don't require mentioning since they are either dead clans of vampires or tribes of werewolves or things that would have no place in the setting, as an example there will be no Nagah sharing there secret of what they are with a house of supernaturals
Basically anything someone with common sense would not put in a game without regard to story or setting just because it's "cool".
As a few examples her are some ideas.
So something like the rare Black Spiral Dancer cub who escaped there hive and has no real intention of being a part of there tribe or the wyrm schemes, wanting to try forget the things that happend to them and live a normal life and escape the darkness of the world. -Is fine
A Tzimisce fleshcrafter who has no humanity or care for mortals or the world at large. -Is not really going to work Id imagine.
A Orphan mage who shuns the traditions and prefers to make it on there own in the world with other likeminded supernatural. -is also fine.
A Ghost that haunts the house trying to get the supernatural to leave or worse kill them. -Not going to work
Although some behavior like this could be acceptable providing that secretly the Ghost did not actually wish them to leave or any harm, I.E a ghost that was the previous occupant of the house might act like he begrudges having them there and such but actually quite like them just not like to admit it, maybe over time the ghost would show more of a friendly nature to its friends.
Basically I guess the main thing to keep in mind is that you should obviously at least want to be with the other characters for some reason, you don't have to be the most friendly creature in the world maybe you might be grumpy or anti social but there should be a reason for you to share each others company and support.
In the end I am open to hear all suggestions for character ideas
Just so long as you don't sparkle
Although there are some things I might allow to technically "sparkle"