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

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[–] simple@lemm.ee 8 points 2 months ago

Weird coincidence, I was asked by multiple friends recently about which controller they should buy too.

Official controllers (ie Xbox, PlayStation) are usually good but many 3rd party controllers tend to be better for PC. Specifically you're looking for one that has hall effect joysticks, which makes the sticks last way way longer and are of better quality. A lot of these companies also have special software for PC to edit deadzones, profiles, macros, etc.

The best controller on the market IMO is the 8bitdo pro 2. It's comfy, well-built, works for ages, and has replaceable batteries.