Jekyll multiple post types

I'm currently building my new personal website and I'm trying out Jekyll, now I was wondering what the best way is to get multiple post types. I basically want to have 2 categories: blog and work

I was looking up some ways and one way was to just create folders for each specific category

- work
 -- _posts
  --- portfolio01.md
  --- portfolio02.md
- blog
 -- _posts
  --- blogitem01.md
  --- blogitem02.md

This way seems to work just fine.

After checking if this was the correct solution I found another one, this basically suggested to use subfolders inside the _posts folder and then define a category in the post itself.

- _posts
 -- blog
  --- blogitem01.md
  --- blogitem02.md
 -- work
  --- portfolio01.md
  --- portfolio02.md

Both methods seem to have the exact same output, is there any real difference in this? Method one seems to be easier as you don't have to set a specific category inside each post.