I see on the keywords tool that IMDB makes reference to a number of accepted drama subgenres, they are:
These are all fine, although I know of other terms that can be used that I may wish to add:
I'd also like to propose distinctions between a theme and a specific thing that happens within a narrative. So I looked up "friendship" as a keyword, and found lots of examples of settings that have in them, well, friendships (I'm going to use TV as my term of reference): The Walking Dead, ER, Riverdale, The 100 etc. These all have characters in them that become friends across the series. That's fine. But the shows aren't specifically about friendships., and have more relevant plot keywords to primarily describe them.
To contrast, consider Gilmore Girls, or My Brilliant Friend, or Hap and Leonard. These are shows specifically about the friendship between two or sometimes more (a small group of) characters. To distinguish them I would propose a "friendship drama" keyword, of which there are none currently. Would this even be accepted?
I would make the same argument for related concepts too: relationship drama, rural drama (or small town drama), college drama. I'd also propose a "personal drama" or "life drama" for settings that primarily follow a single character and how they develop. Would all of these things be accepted?