N00B question - layout in differnt media types

[mrg9999]

First post! Probably wrong place. Please move it 
Probably a N00B question. I'm just starting having used Kodi for years and a NAS layout as 
\media\movies with subdirs for years e.g .1940s 1950s .. 2020s
\media\tv\USA   show names in sub folders
911
Cannon
etc

\media\TV\GB    show names in sub folders  
0downloaded 
0owned (e.g. dvd rips)

Do I need to put everything in a sub folder GB?


\media\TV\retro  show names in sub folders
\media\YT          show names in sub folders

I could have the same view on each folder - grid, list or poster.

On Jellyfin
It finds movies fine, but displays them in a funny order I assumed by year them alphabetically 

i can add screen shots if that is allowed. 

@mrg9999