I believe they are all BaoFeng UV-5R+/UV5R.
They were recommended for us when off roading to communicate between vehicles, but never seemed to work great at that.
Somewhere I think I still have the usb programming cable for them.
Edit: apparently the intent of my post was lost in my poor wording of the title. It has been updated to better reflect that I would like to use them, but for what? And how?
Apart from use as walkie talkies we can sometimes tune in and listen to the ISS as it passes over our location
That sounds neat! Found a guide for it. Also if you use iOS there is a sky app called Night Sky that sends notifications when the iss is about to fly over your location.
https://www.ico-optics.org/how-to-listen-to-iss-on-baofeng/
https://apps.apple.com/us/app/night-sky/id475772902