I never heard of him either, but maybe his fame was centered in Europe. After 99 Luft Ballons, I’m limited on knowledge of euro pop. I do know that I like the quasi-disco heard from Swedish quartet named Ace of Base. Mostly active in the 1990’s. Two well known hits are;
A. All She Really Wants (is another Baby!).
B. I Saw The Sign.
Fun to hear, and well produced.
For Swedish groups that charted globally, before Ace of Base there was Roxette, and before them ABBA.
But you’re right about Boney M, they’re German, and never charted in the USA. I keep seeing them come up in “Best of the 70s” compilations on YouTube by stupid Gen Z/Millenials who don’t use the right charts.