Michael Jackson – Absolute king. Thriller (1982) sold ~3 million in Japan alone; 1987 Bad tour played 14 shows at Tokyo Dome/Korakuen, biggest Western act ever in Japan at the time.
Madonna – Exploded in Japan 1985–1987 (Like a Virgin → True Blue era); constant TV, magazine covers, fashion influence huge.
Wham! / George Michael – 1985 Japan tour was hysteria level; “Last Christmas” is still the default Japanese Christmas song.
Duran Duran – Peak 1982–1985; Japanese New Romantic teen girls lost their minds.
Cyndi Lauper – “Girls Just Want to Have Fun” and 1984 Japan tour made her an idol-level star.
Prince – Purple Rain (1984) was enormous; very trendy in the Shibuya/Harajuku scene.
Bon Jovi – Slippery When Wet (1986) turned them into superstars in Japan almost overnight.
David Bowie – 1983 Serious Moonlight Tour in Japan was a cultural event.
Sylvester Stallone – Rocky IV (1985) and Rambo: First Blood Part II (1985) made him the #1 foreign action hero in Japan.
Arnold Schwarzenegger – The Terminator (1984) and Commando (1985) blew up huge.
Tom Cruise – Risky Business (1983) → Top Gun (1986) made him the pretty-boy heartthrob for Japanese girls.
Eddie Murphy – Beverly Hills Cop (1984) and Trading Places ruled Japanese TV and video rentals.
Stevie Wonder – Still treated like musical royalty on every visit.
Jane Fonda – Her workout videos were a massive aerobics boom trigger in Japan (1982–1986).
Alain Delon – Eternal French cool-guy status; still on every magazine in the 80s.
Breakdancing crews from New York (Rock Steady Crew, etc.) – Street dance explosion 1983–1985.
In short, 1984–1987 Japan was basically worshipping: Michael Jackson > Madonna > Stallone > Tom Cruise > Duran Duran as the top foreign faces.