The two big ones look to be about a year or so old, the little one is maybe 3 or 4 months old. Schnauzer mix, poodle-y thing, and a terrier mix.
They're staying the night if I can't find the owners, but they can't stay long-term so if nobody is found they'll have to go to the humane society tomorrow :/
They all LOVE to cuddle, seem to be crate trained, and are very sweet dogs. They rode in the car perfectly.