I see.. Thank you for the information. I can see that similar results can be achieved by using the tileset as is however this would require us to code the autotiling system from scratch unfortunately. I was hoping to avoid that by making use of existing dual grid mapping systems/plugins. Like this one: https://github.com/Schizem/dual-grid-mapping?tab=readme-ov-file#isometric-tiles.
For now, we will roll out our own I guess but if you can add this one tile to each biome, it will help future game developers using this tileset, and increase adoption of your artwork in my humble opinion.
Thank you again!