The best controller for steam deck is one you already have. My PS One Analog is still working, tho through cable with more than a decade old PS2 to PS3 USB converter.
How to use a PS3 controller on PC guide | PC Gamer
Amazon.com: PS2 Controller to USB Adapter Converter Cable, Compatible with Sony PS1/PS2 Controller Gamepad to PS3/PC Controller : Video Games
How to Use PS3 Controller on PS4 (Good Tips) - MiniTool Partition Wizard
How to use PS2 controller on PS3 and PC - YouTube
How to convert a PS2 controller to a PS3 without an adapter - Quora
Sony PlayStation 3 and PlayStation 2 hardware side-by-side | TechRepublic
Can you use a PS2 controller with a PS3? If so, how? - Quora
Connecting PS1 or PS2 Controllers to the PS3 - How To Tutorial (PS to USB) - YouTube
Building A PS3 Controller Using Random/PS2 Parts! - YouTube
Amazon.com: Mcbazel Playstation 2 Controller to USB Adapter for PC or Playstation 3 Converter Cable for Sony DualShock PS2 PS3 Controllers (NOT Compatible with Dancing Mat Guitar Hero) : Video Games
Amazon.com: Tihebeyan Controller Adapter, PS2 to PS3 Controller Adapter for Sony Playstation2 PS2 Controller to USB Adapter Converter for PS3 & Windows PC : Video Games
USB Cable PS2 to PS3 Video Game Controller Adapter Converter Compatible with PS2 PS3 PC Playstation 2 Playstation 3 - Walmart.com
Amazon.com: BROOK Switch Pro/Xbox One/PS3/PS4/PS5 to PS Classic/PS2 Super Converter : Video Games
For PS2 to PS3 Controller Adapters PlayStation 2 to USB Cable for PC PlaySt.ac | eBay
My PS2 finally feels complete : r/ps2
PS3/PS4 to PS Classic/PS2 Super Converter - Brook Gaming
How to use a wireless controller on PS1 and PS2 - GameRevolution
Sixaxis - Wikipedia
How to use a wireless controller on PS1 and PS2 - GameRevolution
3 Ways to Play PS2 Games on a PS3 - wikiHow
The PS3 Controller Looks AWFUL. - PS3 and PS4 - Cheap Ass Gamer
Easy to Use PS3 Controller on PS4 - Driver Easy
How to reset a PS2 controller | eHow UK
