I can't find the ringtones/notification tones that come on my phone

I have a Samsung Galaxy S10 and I can't figure out how to find all of the tones that come on my phone. If I go to Settings > Sounds and Vibrations > Ringtone, what pops up are two options: complete action using Media Storage or Zedge.

If I use Media Storage, it shows me a short list of ringtones/notification tones I already have in use, via my Samsung and downloaded from Zedge. I have no idea how to access all of the tones that originally came on my phone.

Has anyone else had this problem before and does anyone know how to solve it?

Thank you for your time and for your help!