Prioritized Requester list - When creating a ticket

When creating a ticket and adding a requester, the sorting is not intuitive at all.

We would like the requester list to show either the most used requester emails at the top of the list or change the requester's emails by adding certain requesters as important, so they always show when agents click the requester field or when starting to type their emails.

Example: I start writing "ma" and Marketing@company.com shows up at the top of the requester list, the requester email I mostly add to my new tickets.