Three cats in the yard

Three of our four cats came out to watch me photograph the leaves yesterday. I know, four cats is too many, but only one of them is "intentional". The orange cat (Simba) and one of the black cats (Capri) were orphans rescued at work, and the other black cat (Bootsie) apparently came with the house when we bought it (although we were not aware of that until he showed up and made himself at home).
Capri and Bootsie are marked almost exactly alike: Bootsie got his name from the white "boots" on each of his paws. Capri also has white "boots", but her fronts are more "slippers" than "boots", particularly the left front. They look amazingly alike for two animals who (because of the distance from where we found Capri and where our house is) cannot possibly be related to each other.