Beef Ribs vs Back Ribs vs Short Ribs

I can’t seem to figure out the difference.

Are these beef ribs?

* [https://imgur.com/a/oYVWW8k](https://imgur.com/a/oYVWW8k)
* [https://imgur.com/a/22FUjgW](https://imgur.com/a/22FUjgW)

Are these back ribs?

* [https://imgur.com/a/v3Drgu5](https://imgur.com/a/v3Drgu5)
* [https://imgur.com/a/dR78i0N](https://imgur.com/a/dR78i0N)

Are these short ribs?

* [https://imgur.com/a/JPLUA9B](https://imgur.com/a/JPLUA9B)
* [https://imgur.com/a/gmQbeHl](https://imgur.com/a/gmQbeHl)

Which ones are usually better? I keep seeing people buying beef ribs from Costco but I never see those. Only the other two types.

Any clarification would be helpful.