Both are BL dramas. In Oxygen one of the leads works at a cafe and they are always eating cake, in craving you one of them owns a bakery. Similar concept. Also, in both one of the leads has a traumatic past and guitar playing is very present in the story.
Earth Pirapat playing as a swimmer with most of his scenes being shirtless by the pool.. do I really need to say more? Victory Lap is not BL but you might want to check it out :)
Thai BL dramas. Not many similarities but part of the story in UWMA revolves around the faculty's swimming team (more predominantly in Water Boyy, of course) both series have a swimmers BL couple. If you like boys in pools, watch them both :)
Thai BL dramas. Multiple couples. Rich guy falls for poor guy. Music and guitar playing are part of the story. Shows LGBT parents.
Both are Thai BL dramas by Studio Wabi Sabi. There are not many similarities but many members of the "Love by chance" and "A chance to love" cast are part of this series. Earth, Gun, Title, Yacht, Perth, Sammy, Plan.. etc.
Both are Thai BL dramas that include Mean, Plan and Perth in the cast. It's not directly connected to the Love by chance universe but it has connections with Love Sick (Noh and Phun are part of the story as well)
Thai BL dramas with multiple couples. The main similarity is that in both, one of the lead characters is abandoned by their boyfriend since the first episode (Pete left Ae, Pha left Wayu) and they have to overcome their sadness with the help of their friends.
Both are Thai BL dramas with a school setting and a horror/mystery element included in the plot. The characters have to deal with the ghosts that haunt the school but there are romantic scenes as well.
Both are Thai BL dramas that include a relationship between a human boy and a supernatural being (Dream/Ghost)
They are both BL dramas with a supernatural/horror theme. Magic/ghosts, cheating and other unexpected plot twists.
Although the BL couple is not the main focus in Long Khong, both are supernatural/horror drama series with a BL touch.
Both are Thai BL dramas with a lower budget and quite underrated but still enjoyable to watch between other series. Plus, both of them have some good LGBT support moments that I really liked :)