It really just depends how she looks like or what's her personality. Here are some examples.
Silver she-cat: Silverheart
Orange she-cat: Sandpelt
Black she-cat: Nightshine
Tortoiseshell she-cat: Spottedpool
White she-cat: Whitepool
Kestrelwing
Sweetbriar, Briarpelt, Hazelpelt/fur, Mousefur/pelt.
Yes, those are suitable warrior names for a gray tabby cat in a fantasy or role-playing setting. They sound unique, nature-inspired, and match well with the cat's fur color and characteristics.
I don't know what a "warrior cat name" is, but how does Lioness grab you?
Bloodspill Darkheart Sharpfang Nightfeather Tigerblaze Shadowfur Skullfeather
I have heard many times that there's three authors to the Warrior Cat books, but what are the names of those people?
Here are some I personally like: Smokesong, Graycloud, Featherfur, Dustclaw, and Fogpelt.
well, some loners are barley, sol, purdy, etc. ravenpaw leaves the clans, but he is still with thunderclan in heart, and purdy joined the clans as an elder
Silverfur Graywater Stormclaw Greyflame
Here a few examples: Destinypool Leafsong Mistyheart Nightheart Featherfur
There are lots of good website, I suggest you look up on google "warrior cat rp websites"
There are no common names...every different name is unique! :)