@ArmaniAdnr Pro tip: i'd suggest you watch missions cutscene compilations and watch mission gameplays.
when for example you see a character do a cool pose, remember what the pose was about what was the character holding in that scene(object,prop,car,weapon...ect), the name of the ped who was he interacting with (other peds), the name of the mission... ect and use that to your advantage as keywords to look for animations in menyoo. It may take a while to find some good animations at first but once you understand how to look for animations you'll get enough experience to look for more complicated animations.

pro tip 2: if you're looking for animations for the main characters look for animations using these keywords
1- player_one (Franklin)
2-dual
3-mph 'original online heists'
4-player_zero (Michael if i'm not mistaken)
5-player_two (trevor if i'm not mistaken)

-Raven

1- go to director mode
2-choose your character (it should be in online characters tab or something like that)
3-once you've selected the character you should be able to play with it
4-go to menyoo then where you usually customize your character then go the 'outfits' tab then save the outfit but what's actually happening is that you're saving the character as a whole
5-go to scene director(mod) and save the character as an actor
6-next time you spawn the character for a photoshoot go to scene director and spawn it using the 'load actors' tab but it's gonna look weird and won't have the original outfit, THAT is where menyoo comes in hand, go to menyoo, outfits and apply the outfit to the ped.

q: why not just save and spawn the ped using just menyoo?
a:when you do that it usually causes a glitch where the character will NOT appear in the rockstar editor (invisible) and pretty much you'll ruin all your work.

sorry to disappoint you but i don't think it's possible. Im sure most of those poses don't exsist ingame as animations.
but if you're creative enough you can find somewhat similar animations that come close the model's pose in the loading screen.
why it's not possible is because of the fact that the art work wasn't really based on the ingame animations (i could be wrong but i'm certain of it)

hello, im really interested in helping you figure out how to do it as i have been searching for a way to do it but i never managed to figure it out. send me a dm if you're interested in collaborating.

Hello everyone.

i would like to know how would i go about animating a prop/object. For example car door animation like in the cutscenes of missions.

Thank you in advance.