Facebook – If someone is blocked on the personal account, are they automatically blocked from the Pages I managed/own

You can either block those people (which you do by going to their profile, clicking the icon that looks like a machine cog, in the top left corner and then clicking Block/Report which will lead to a box where you can block them).

Alternatively you can make people think they are still your friends and subscribed to you by adding them to a 'Restricted' group which you can do from the facebook home page. Along the left side of the News Feed, with all your Apps there is a section called 'LISTS', which, after clicking More will display a group called Restricted. The people in that group will not see any of your updates and in Profile Settings you can also make it so they can't see any Pictures etc. as well.

Hope this helps.

According to Facebook, you can't delete smart lists:

Note: You can’t delete default lists, but you can hide them from your home page. These lists will also stop appearing on your home page if you don't use them.

You can archive them, so they stop posting things. They will still be accessible through > lists.