Teensyduino: Using USB Joystick with Teensy on the Arduino IDE
Zero delay USB Joystick Encoder. – S-Config
Build a USB Adapter for Retro Joystick and use it on your PC, MiSTer or Amiga A500 Mini - YouTube
Pololu - Sample Project: Wixel USB Joystick
Low Force Joysticks and Switches – GameAccess
raphnet. - Gameport joystick to USB adapter
Amazon.com: SJ@JX Arcade Game Controller USB Encoder Board Gamepad LED Microswitch Button Analog Joystick Flying Stick for Nintendo Switch PC PS3 Retropie Raspberry Pi : Video Games
Convert an Old Game Port Joystick Into a Usb Flight Stick With Arduino : 5 Steps - Instructables