The B-Team is linked to the 'BAD' album sessions, but Michael Jackson used to work in his home studio with a small team of people also on other albums (in a similar way like the B-Team).The so-called B-Team wasn’t a general “team that helped him [to] work on producing demos”, it was a small group of musicians which consisted of Matt Forger, John Barnes, Bill Bottrell and Chris Currell, and it only existed between 1985 and 1987. The B-Team worked on demos at the Hayvenhurst home, for the Bad album.
This group of guys served almost as the antithesis of Quincy’s own A-Team, in a sense, which Bruce Swedien was also a part of. While the A-Team was under the strict guidance of Quincy, the B-Team was allowed to be much more free and experimental, hence why Michael created a company in 1985, alongside John Barnes, called “Experiments In Sound”.
While some of these guys did work with Michael in later years, now and again, they never came back together, all four of them, for any other session after 87’.
For example, that also happened for the 'Off The Wall' album, or for certain albums released by The Jacksons when he was helped with his preproduction work.