@anon28433972 - no it is not possible without explicitly listing the names.
However, when I see this request it looks like a red flag to check the schema of how the doc is setup.
Its is not the way most folks start designing their table but having rows instead of columns - so transposing the table usually helps. Take a look at Referencing a variable column header and see if it makes sense for you.
Also happy to look at your doc and offer suggestions!