Microphone list for "Audio Recording" configuration

I am using a Jetson Nano 2GB with a Docker installation. Although everything is fluid (the web interface) I do not start testing everything because I cannot configure the microphone. I use this as a microphone adapter jack on my Jetson Nano: Adding Sound on the NVIDIA Nano with a Sound USB Dongle | by Dan McCreary | Medium (the mic works).

The problem is that I don’t know which one is in the list of settings (it doesn’t matter if it’s arecord or PyAudio). Can you help me see the list and know exactly what it is? This saves me from having to try one by one.