I Want To Know Your Favourite Relationship Dynamics* So I Can Write About Them During Uni, Once My Multifemale

I want to know your favourite relationship dynamics* so I can write about them during Uni, once my multifemale and multimale fics have been completed...

*Relationship dynamics - romantic, friendly, sibling(like), parental etc. relationships between specific characters

I want you all to send me your favourite relationship dynamics from the fandoms listed below. These will not be written immediately, it will be for when I start Uni, and I will make them into a series on AO3. I have so many that I like, but I want to know about other peoples opinions. 

The fandoms I will write for are: 

MCU/X-Men films/The Defenders{Netflix series’}/Agents of SHIELD/Agent Carter/Venom/Deadpool

Shadowhunters (The books, the show & the film)

The Witcher (Netflix series)

Glee

BBC Sherlock

BBC Merlin

BBC Atlantis

ITV Victoria

The Umbrella Academy (Netflix series)

Supernatural

Vampire Diaries/The Originals

Gotham (only the show!)

Big Bang Theory

Good Omens (series & book)

Doctor Who{mainly modern}/Torchwood/Class/Sarah-Jane Adventures

Jurassic Park film franchise

Harry Potter{mainly the films, only on book 4}/Fantastic Beasts/Cursed Child

The Hunger Games (films & books)

NBC Hannibal

NCIS (only regular NCIS, none of the spin-offs)

The Mentalist

Primeval

BBC In The Flesh

IT (1990, 2017, 2019)

Stranger Things

Twilight (the BOOKS!)

Lord Of The Rings/The Hobbit (the films)

Vampire Academy (books & the film)

Star Trek AOS

His Dark Materials (series & books)

Trainspotting (films)

Cornetto Trilogy + Paul (Simon Pegg & Nick Frost films; Shaun of the Dead, Hot Fuzz & The World’s End)

The Addams Family (1990′s films)

Pride & Prejudice{BBC series & book}/ Pride & Prejudice & Zombies {film & books}

Maleficent films

The Goldfinch film

Pirates Of The Caribbean

I would really appreciate input from anyone for any of the fandoms listed above. 

Example of what I want - ‘I suggest the ship Pepperony form the MCU for you to write about’ OR ‘I suggest the Tony & Peter father son dynamic’ OR ‘I suggest Rocket and Groot’s friendship’ OR ‘I suggest Gamora and Nebula’s sibling dynamic’ etc.

THANK YOU!