Muhammad Ali

Bluejayro: The good news is that "Touched by an Angel: Fighting the Good Fight" is indeed listed on Muhammad Ali's page at https://www.imdb.com/name/nm0000738/ but in the Self section, not the Actor section. If it wasn't there at all, there would be a technical problem with the database.

However, the problem here is an issue of interpreting IMDb policy, not of technical issues in the database.

I think that "Self" is probably an incorrect designation because I assume that Ali was portraying a fictional version of himself as part of a scripted storyline. 

The IMDb policy on this (https://help.imdb.com/article/contribution/filmography-credits/characters/GKLQVXKH7U8DATWX#) says:

Where someone is billed in the credits as Himself/Herself/Self in a fictional piece and are playing a scripted, fictional version of themselves, we use the performer's name as the character name to avoid moving the credit to the 'Self' category even if the credits say Himself/Herself/Self - for example:         

Thus, I recommend that Ali's character name for this episode be corrected from "Self" to "Muhammad Ali". That would conform to the IMDb policy. 

I hope this helps.