I would cancel out Cricket frog. The slimness of the body and eyes of these frogs don't match them.

You definitely have some kind of Tree frog. A spotted Chorus frog is a possibility. Either way, they're going to be great fun to care for!

I would, for now, follow the instructions on this article. Most Chorus frogs' care is similar, and I'm expecting your species care will be similar to that of the Pacific Chorus frog : Frog Forum - Pacific Chorus Frog

A 10 or 15 Gallon should suffice for now. As for substrate, Coconut Fiber, also known as Plantation Soil, would be the best choice. I would give them some fake plants to climb on, as well as a preferably forest or jungle aquarium background for the back and sides of the tank. Most of all, MAKE SURE THE LID IS SECURE!!! Treefrogs are master escape artists. I would give them a lot of climbing area, and maybe some sticks (with no sharp points) to climb on. A water bowl will suffice, just refresh 100% of the water every other day. Make sure the water you use is dechlorinated and conditioned, or else it will harm your frogs.

For feeding, I would feed them crickets no bigger than the space between their eyes. I strongly recommend picking up some Reptile Calcium Powder and Multi-Vitamin Powder, and dusting the crickets once a week with each supplement (though not on the same day as each other!)