Just putting this here to get a quick look at how different sizes and dimensions look on desktop and mobile. Really wanted to see how the titles and other fixed icons affect the look of it.
Definitely not a comprehensive guide (I did not do the math) but hopefully if you come across this it helps :)
Sizes in order as they appear:
16:9 - 1920 x 1080
1:1 - 1080 x 1080
1080 x 1152
1080 x 1350
1080 x 1440
9:16 - 1080 x 1920
