The Myrtle Warbler is CURRENTLY "included in Yellow-rumped Warbler" in North America. What you may call "Myrtle Warbler" and "Audubon's Warbler" are officially conspecifics, meaning they are of the same species (Yellow-rumped Warbler). They may have been treated as separate species in the past, but now, your picture is actually of a Yellow-rumped Warbler. The sub-species we have in the east is known as "Myrtle".
The official source of the taxonomy of birds found in North America is the North American Classification Committee (NACC), which is an official committee of the American Ornithologist's Union (AOU). The last proposed split of Yellow-rumped Warblers failed. The vote was 7-4 in favor of "further genetic analysis and determination of the extent of interbreeding in the subspeciesí contact zones". So, for the time being, the bird in the photo is still a Yellow-rumped Warbler, despite changes by organizations elsewhere. Birders in North America are not seeing the split you referenced on any checklist or in any field guide specific to North American birds.
Can you please provide a link that shows this Dave's Garden regulation? It would seem that using names that are not recognized in the country or continent in which the photo was taken would serve to confuse those who submit the photo.