Not enough reputation to comment, therefore new answer to @xaif.
My workstation (Lenovo Thinkpad P53) is not on the list either. Nonetheless, I checked my audio codec with the command
cat /proc/asound/card*/codec* | grep Codec, then looked for the
Conexant CX8070 in kernel.org. The specific model was not available but the generic
headphone-mic-pin added to
/etc/modprobe.d/alsa-base.conf did the magic.
1 - type
cat /proc/asound/card*/codec* | grep Codec in terminal;
2 - copy audio codec (mine is
Conexant CX8070) and search it in kernel.org;
3 - if the model is not available, read descriptions and see whether a generic for that producer is available. In my case, the description for
headphone-mic-pin is 'Enable headphone mic NID 0x18 without detection';
4 - go back to terminal and type
sudo nano /etc/modprobe.d/alsa-base.conf and add the line
options snd-hda-intel model=headphone-mic-pin, while replacing the codec with your own;
5 - save and close
/etc/modprobe.d/alsa-base.conf in nano (Ctrl+X quits the editor and you press Y to confirm that you want to save);
6 - plug in the headset after rebooting and you should be able to select it as audio input in Settings/Sound.
This worked for me, hope it will help others too.