Can you run a report in Event Espresso 4 that has all registrants to an event in alphabetical order with their details and answers to custom questions?
Go to Event Espresso -> Events -> {hover over event name} -> Registrations
That now lists all of the registrations for the event you were hovering over.
At the bottom of the table click on the ‘Registrations CSV Report’ button.
That will generate a report for all of the registrations on that event, including the custom registration questions you have asked.
They will NOT be in alphabetical order, but using Excel or whichever spreadsheet software you prefer, you can reorder the rows however you prefer from there.