However, I see in the product specifications page of the console controllers that they also support PC.
And the PC controllers sometimes support some of the consoles.
The only real difference between controllers, from a technology perspective, is that is some of them support bluetooth/2.4 GHz.
So I have two questions:
If they are already cross-compatible, why even bother having different types?
How should I decide which type of controller I should buy? It should support PC, console-support is not essential.
Note: I am a novice in game controllers but aware of different network stacks.
Edit: Thanks for the amazing response! These are my key takeaways from all the comments
Hall-effect sensors are a must
Default console controllers usually have stick drift
If you need trackpad, take PS5
8bitdo is a reliable brand, as per multiple responses
Most controllers have good support on Linux. But haptic feedback can be a hit/miss as it can be platform/game dependent
There are various connectivity wireless standards. Dongles are the most reliable but you lose a USB port.
Keep track of handsize/comfort and button layout
PS controllers have excellent support on Linux/Steam
For PC, I would personally suggest looking for a controller with two things. Number 1, Hall effect sensors. Eliminate stick drift entirely with that alone. Number 2, replaceable joysticks. If the sticks last a long time, then the controller is expected to last longer. I just think having a way to replace work rubber is a good thing. Personally, I have loved Gulikit. My controller also happens to work on switch as well. Here is a link of you are interested in checking it out. Note that that is the controller I have, but you should definitely look at the different models. My controller has lasted about 3 years now. I used to go through PS5 controllers in about 6 months.
That is a totally fair question and one that I simply overlooked. Technically you can buy Gulikit through Amazon. I personally appreciate that the cost of it doesn't go up over like a regular controller. Scuf did me dirty, I had a scuf for all of two months before the lb button fell apart and they refused to repair it. That thing cost me $185. This controller cost me $70.90 and has lasted me about two years. Here is a link to the Gulikit store on Amazon. I do recommend making sure it is from that store. I don't know anything about it, but there is a AKNES store which sells gulikt controllers.
https://www.amazon.com/stores/page/BCC8C06B-7BF5-4D6C-A9A0-6290B8091F02?ref_=cm_sw_r_apann_ast_store_VJNBFMTJC962ENMFECCM
On an unrelated note, if you have joy cons with stick drift (who doesn't have these) then Gulikit also sells just the stick modules so you can fix it for good.