I’ve just done a double take because this is quite a coincidence. I’ve acquired a couple of hedgehogs who visit most nights and I’m feeding them cat food, hedgehog food and kitten kibble. One night, I was surprised to see the food being eaten by a tortoiseshell cat which ran off as soon as it saw me move inside. Another night a black cat (with a white chest) appeared and I recognized it as the pretty stray that lives under a tree in the local pub car park.
Unbelievably, last night, a lovely ginger and white kitty popped by for a few mouthfuls. They look like older versions of your three.
Have you heard The Mafia Cats by Roger McGough - great for anyone with cats that go outdoors.