Part Two of this hitlist offers more Japanese names so may want to check it out.
Here’s Part One for you! You may see some “old names” below …
—Edited by TheFNGee
#16 – Riku Hagiwara

Circa 2020 Boys Love (BL) main character
He was perfect in his portrayal of the insecure and shy classmate of the coolest and most beautiful boy in school in My Beautiful Man. Hagiwara was a silent actor with his own charms and capacity. Opposite Yusei Yagi, who projected vanity and ambition front and center, Hagiwara playing Kazunari Hira, projected the opposite but just as effective.
#15 – Suzuki Jin

Circa 2020 Boys Love (BL) main character
As Uenoyama Ritsuka in the live-action adaptation of Given, Suzuki Jin impresses with an intelligent and emotional take on the famous character. I just hope they cast him again in another BL. I think he should play one more!
#14 – Baba Ryoma

Circa 2000 Boys Love (BL) main character
Reputable stage performer and a BL veteran from the Takumi-Kun days, Baba Ryoma remains an actor with versatile talents. He plays a secondary character in the early Takumi-Kun movie and is promoted as one of the franchise’s best-known leading men.
#13 – Saito Yasuka

Circa 2000 Boys Love (BL) main character
The star of Words of Devotion (2007), Yasuka Saito, is one of the pioneer BL actors from Japan. He was also part of the Takumi-Kun series and is heavily involved in the mecha live-action programs of those years. He’s one of Japan’s most appealing BL actors, in all honesty.
#12 – Furukawa Yuki

Circa 2000-2020 Gay roles
The acting career of Furukawa Yuki can be regarded as a model of how to survive Japanese entertainment’s unpredictability for over a decade. Playing for screaming high school girls, he transitions into Zera (Raichi Hikari kurabu-2015) and then did Coming Home five years later. He also starred in romantic, thriller, and adventure dramas in between.
#11 – Tadayoshi Okura

Circa 2000 Gay Movie main role
Okura, a singer, radio host, and entertainer from Johnny and Associates, surprised me with his gritty, heart-aching performance in The Cornered Mouse Dreams of Cheese. I applaud his on-screen chemistry with co-star Narita Ryo; those sensual scenes were hot!
#10 – Odagiri Joe

Circa 2000 Gay Movie main role
Japanese superstar Odagiri Joe did one particular gay character that remains iconic to this day. From playing down-to-earth, hero-worship, hateful characters, Odagiri is the lover of an old homosexual who is retired and living with other gay men in The House of Himiko.
#9 – Machida Keita

Circa 2020 Boys Love (BL) – Main Role
At the age of 32, Machida Keita established a reputation as a versatile actor. As Kurosawa Yuichi in the acclaimed drama/movie Cherry Magic, Machida projects the ideal guy who is bound to protect and love all those impressionable BL characters out for true love.
Up next, we have the final names on our list!
Keita and his co star were terrific in one of my all time faves- Cherry Magic- great direction and crew – I’ve only seen him in one other series – the grisly Alice in Borderland- but need to see more.
Yuki I find stiff and monotone as an actor- though I enjoyed him as a god in Favoritism of the Gods- he was well cast and seemed to relish the role.
Clearly from your list I need to see Cornered Mouse:)