Isolating contacts from other addresses in mail app

I didn't quite know what terms to search for.

Is anybody able to tell me how I can stop one email account using another email accounts contacts? Is it possible not to share contacts between the email accounts in the Windows 10 mail app? When using email address 1 and I start to type in a "Send To" it completes the address from email address 2/3/4/5's contact list.

I have 5 email accounts and I want them to all have separate contacts without access to another accounts contacts.

lmao, I've said the same thing 3 different ways. Goes to show I have no idea?

Thanks

(OH NO, I just noticed my swag of props and reps and potato chips weren't dragged along with me from Eight Forums, Sad face)

I may of just answered my own question.

Going into "people" then "settings" you can "filter contact lists" but unchecking lists removes them entirely, even from the account that owns them. You can't seem to just associate one people list to one account.
I know it's a strange perky request/need but I have my reasons :)