BL dramas like KinnPorsche

There really isn't another BL i can think of plot wise like KP per se but if you want an action /crime/mystery  BL...

• HIStory3: Trapped
• Long Time No See
• Manner of Death
• Where Your Eyes Linger(not crime but a Bodyguard & Boss dynamic)

If you want  university/school or enemies to lovers  themed BL like Semantic Error or Bad Buddy

• Enemies to lovers+ high school
  • HIStory3: Make Our Days Count(highshool)
  • Light On Me (highschool)
• Enemies to lovers+ University
  • Blueming(kind of one sided rivalry)
  • We Best Love: No. 1 For You (one sided rivalry)

If you want a supernatural BL like He's Coming to me

• The Miracle of Teddy Bear
• Something in My Room
• Triage

If you want a friends to lovers like I Told the sunset about you

• Kimi no Koto Dake Mite Itai
• Lovely Writer

If you want an office romance or mature-ish BL like Cherry Magic

• Old Fashion Cupcake
• Life: Senjou no Bokura
• His

If you want a light-hearted or fun  BL like Cherry Magic

• Kieta Hatsukoi
• Fukou-kun wa Kiss Suru Shikanai!
• Senpai, Danjite Koidewa!
• Zettai BL ni Naru Sekai VS Zettai BL ni Naritakunai Otoko

Other ones I would recommend to put on your list

• To My Star/To My Star 2: Our Untold Stories
• Like in the Movies

My pleasure  ^_^