Not 100% sure about any.
- Doobie Brothers: There's that video where MJ sings on the phone to Elizabeth Taylor and says he's singing in those songs, but if you pay attention to the lyrics that he mentions to Elizabeth and then listen to songs, it's obviously not him singing. I could confuse his voice on the line "Mintute by minute by minute"...
But I remember reading it's just someone randomly singing more in a similar tone.
https://ultimateclassicrock.com/doobie-brothers-michael-jackson-debunked
I only listened briefly to 2 of the 3 remoured songs right now.
- The Dude: According to Discogs credits which seem rather extensive, only title track:
https://www.discogs.com/Quincy-Jones-The-Dude/release/2761237
- According to Discogs again: no ,
https://www.discogs.com/Greg-Phillinganes-Pulse/release/152458
Though, Discogs mentions Richard Page, who I don't know so I just listened to one of his 80s tracks...
And re-listening closely to Behind the Mask with good headphone... it's confusing. I would say the Vocoder voice is not MJ pronounciation, but there are some "he he", "aouw" and "doo doo doo doo" that sound very confusing. Could be Michael for me.
Something else that confuses me is that I don't remember Michael going "he he" and "aaaouw" and those stuff before... the Bad Tour? (maybe I don't know the Victory Tour well enough).
Then watching the 1985 video for Behind the Mask, it seems like it's clearly Greg doing the "he he", "aaouw".... the "doo doo doo" is still confusing to me...
- Jay-z: Discogs says no again:
https://www.discogs.com/Jay-Z-The-Blueprint/release/251894
I don't really know those songs, but from one listen, didn't spot MJ.
- Olivia: No idea, I don't think it sounds anything like a MJ songs, but he would have only co-written it... Almost no info to be found.
Searching about Woop-T-Woo it I found this list: https://norwegiancharts.com/showperson.asp?name=Michael+Jackson
Which has some unexpected titles... trying to spot MJ homonyms...
But it's actually a treasure source of mind****ing titles I never heard about... I'm not sure if my brain will come out undamaged after this exploration...
"Let's dance" ... I finally got it, it's sampling (or partly covering not sure) "Centipede" by Rebbie Jackson.
"Look Back At It": It's definitely a rewrite of some MJ verses (from "You rock my world")
"Monsters you made": ???
"Even": Has words from Remember the Time
Didn't remember clapton covered "Behind the Mask" ...
"Wer Ist So Nice": Part-cover from Michael Trapson??? ... but I don't see where it comes from in MJ's discography ... I supposed it's initially snippets from Billie Jean sung in a unrecognisable way. Or does it come from a remix or so?
"Ik heb een wens" : Dutch rewrite of "Heal the World"
"Machine": Produced by some "Michael Jackson" (1974)
"King Kunta": ???
"Help Het WFP!" : Another Dutch rewrite of "Heal the world"
"Vijf december": A Dutch rewrite of "Can you feel it".
"Kool Savas" (artists name) ... looks like an whole album or so: ???
"Aardsong" : You guessed it, Dutch version of "Earth Song"
"Michael Jackson's Greatest Hits Medley" : Looks like a cover-medley...
*Not sure how far I can continue, I guess my brain is already compromised...*
"Monster" : Huh, I have no idea who sings this ;-)
"Bad afrojack remix": Yeah, the title says it, it's a terrible remix...
"Regen": ??? (Sounds like German?)
"Chumm chly zu mir" : ??? (can't find on YouTube ... sounded promising...)
"Take you away": ??? (sounds like eurodance from the 90s or something ... oh, 2020, sorry but what's the relation with MJ)
"Happy feet 2 opening medley": has Shake your body, and Rythm Nation as well
"Paul Anka - The way you make me feel" 2004: (Had never heard about it, seriously...)
"B. Projekt": Contains music from Billie Jean
"Dance & shout" :