Hi @TannisR
You are correct, at this time custom fields do not appear in alphabetical order through the contact details view. We can't guarantee a commitment to deliver on this ability but we will continue to collect both requests along with use case examples on why would the customer like to have the ability to change the order of custom fields.
In the meantime, we do recommend sharing your need for dropdown fields on sign up forms directly on its idea thread. Doing this allows you to receive any updates we may share in the future.
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