In my view, Gender Bender encompasses all types of gender shenanigans and gender exploration.
Gender Bender:
[ul] [*] Crossdressing
[ul]
[*] trap
[*] reverse trap
[*] mistaken gender
[*] disguises
[/ul]
[*] Body Swap
[*] Gender Swap
[ul]
[*] gender transformation
[*] reincarnated as opposite gender
[/ul]
[*] Transgender
[ul]
[*] gender identity
[*] gender identity disorder
[/ul]
[*] Intersex
[/ul]
MangaUpdates has these categories:
- Cross-dressing (1669 uses)
- Trap (608 uses)
- Body Swap/s (248 uses)
- Gender Transformation (224 uses)
- Transgender Character/s (200 uses)
- Mistaken Gender (87 uses)
- Reverse Trap (86 uses)
- Female Disguised as Male (83 uses)
- Intersex (66 uses)
- Male Disguised as Female (54 uses)
- Gender Identity (47 uses)
- Body Sharing (47 uses)
- Transgender Protagonist (44 uses)
- Reincarnated as the opposite gender (32 uses)
- Gender Identity Disorder (31 uses)
- Gender Swapped Character/s (11 uses)
AniList has these tags:
- Gender Bending
- Crossdressing
- Body Swapping
Kitsu only has this category:
- Gender Bender
Dynasty Reader, which has a lot of manga and doujinshi with these kinds of themes, has these tags:
- Cross-dressing
- Transgender
- Gender Bender
- Body Swap
There are several distinct concepts that I usually look for in a manga with gender bending:
- Manga with crossdressing/disguise/hidden identity shenanigans (e.g.
Mint na Bokura,
Coda,
Hatsukoi Zombie,
Shounen Oujo,
Nononono, etc.)
- Manga with crossdressing/expression/LIKING IT/reluctantly doing it exploration (e.g.
Prunus Girl,
Reversible!,
Hatsu Kokuhaku,
Past Future,
Otoko no Ko Days,
Nameless Asterism, etc.)
- Manga with body swapping/sharing shenanigans (e.g.
Shishunki Bitter Change,
Gyakuten Honey,
Swap Swap,
Shut Hell,
Not Lives,
Junai Sensation, etc.)
- Manga with Rule 63 genderswapping/gender transformation shenanigans (e.g.
Ame Nochi Hare,
Kanojo ni Naru Hi,
Hana wa Nisemono,
Mao Marimo,
Kyon no Tea of Sagittarius, etc.)
- Manga with more nuanced LGBT themes relating to gender identity and so on (e.g.
Wandering Son,
Shimanami Tasogare,
Bokura no Hentai,
The Bride Was a Boy,
that one chapter from Nickelodeon,
Yuureitou, etc.)
-
All of the above (cough)
Why not leave in Gender Bender as an umbrella term that encompasses all the gender stuffs?
MAL and
MU both have "Gender Bender" as a genre,
AniList has "Gending Bending" as a tag, and
Kitsu has "Gender Bender" as a theme.