On Twitter, I'd like to watch specific "followed" people in the Home page (timeline), and watch the others (i.e. celebrities and organizations which have more tweets than my friends) in a list window I created. Is a separation like this possible?
I'm not sure what you're asking here because this is primarily what twitter lists are used for.
- In the twitter web application, Click "Create a List"
- Find the user you want to "List Follow"
- Click The "List" dropdown.
- Add this user to your newly created list (You do not have to follow the user)
Instructions for Old Twitter are here.