It looks like the data is stored in the database here: ost_thread_event
Any row with event_id = 1 is a ticket creation.
From that row, you can pull the staff_id, uid, or username for who created the ticket.
If I can pull any one of those pieces of data into the email template for New Ticket Alert, I could solve my problem.
Any suggestions?
For reference, I'm running osTicket v1.10.4.