The specific zone maps don't account for the area traversed between zonelines, and the general "stylized" map of Eorzea as a whole leaves this vague likely due to the way they designed the game into zones rather than a seamless world.

Any completely contiguous, to-scale map of Eorzea is going to be a loose interpretation at best, because the walkable areas of Eorzea we have access to technically leave large tracks of terrain completely unaccounted for, and not necessarily just the implied paths between the zonelines but also the sheer wilderness on the other side of each zone's "walls".

To answer your question though, I would assume an artistic interpretation of to-scale cartography centered on the world of FFXIV is probably an uncommon bit of art, if not one no one's bothered to complete at all or at least share with the community at large.

I wish you luck and look forward to anything you decide to share!