Gateway comparison?

Hi,

New to LoraWAN and as you can see, first post!

I’m trying to understand the differences between the various gateways, but have a bit of trouble finding a good comparison.
For example, there’s multiple versions of the standard and not every gateway supports each version. There’s also a need for GPS if you’d want to support class B devices. Some are outdoor, some are not. Some have a WIFI backhaul and some LTE, etc etc…

Has anybody made a good comparison of the various gateways and their capabilities?