in addition to the standard ringtone, each individual contact can be assigned their own ringtone. in addition to the ringtone, the vibration pattern can also be individually adjusted on the Samsung device. in addition to the standard ringtones, you can also add your own ringtones.

Android 10 (One UI 2.0)
Step 1:  Open the  Contacts -App
Step 2:  Tap on desired  Contact
Step 3:  Tap on  Edit
Step 4:  Tap on  View more
Step 5:  Tap on  Default ringtone
Step 6:  Tap on desired  Ringtone
Step 7:  Tap on  Back
Step 8:  Confirm with  Save
  1. Open the Contacts-App
  2. Tap on desired Contact
  3. Tap on Edit
  4. Tap on View more
  5. Tap on Default ringtone
  6. Tap on desired Ringtone
  7. Tap on Back
  8. Confirm with Save

Samsung Instructions