We have made a huge research and came to the conclusion that reWASD is not able to detect the additional buttons/paddles, since they are not reported to Windows as separate controls, unlike Xbox Elite 1 and 2 paddles. The following gamepads are supported without additional buttons/paddles. Xim Nexus (without additional back buttons).Razer Wolverine V2 (check Usecase #30 to remap the additional buttons).
SEGA Genesis (Japanese & International).Thrustmaster Wireless Black (remappable as Generic controller).Razer Raiju Mobile (without additional M-buttons).Ipega 9023s (Full support for Bluetooth connection only).GameSir G7 Wired Controller (without LEDs and rumble).DualSense Edge (only with connecting with PS5).Google Stadia controller ( wired and bluetooth connection from reWASD 6.5, without rumble) You can do this before, or after the config is applied. reWASD calibrates the sticks automatically, just make sure to complete the full circle with your sticks for it to auto-calibrate.
Please note, that Nintendo controllers may need extra stick calibration. The latest reWASD version officially supports the list of following controllers whether connected by Bluetooth or by USB cable: