A lot of Michael’s ticks and vocal hiccups that became iconic were defined over a period of years starting when he hit puberty on the Jackson 5’s Get It Together album.
Also when it comes to the style of dress, A LOT of the artists were dressing in similar bombastic fashions. Michael just became the biggest artist of all time so he became the “face” of that type of 80’s look.
I’m not saying he couldn’t have been influenced by this Alfonso artist but there’s enough documentation of Michael’s life and come-up that shows that just as much as he “borrowed” from the look, style and sound of the time period, he innovated as well.