Flux is decent at maps - but it has a strong preference for 3d or isometric views. This model will help steer your prompt consistently toward a flat traditional cartography style.
It's reasonably flexible in terms of producing more monochromatic or more colorful maps. It can render decent star maps or otherworldly planetary maps. Trained on traditional, real-world, hand-drawn maps, it brings a believable analog aesthetic.
I still have plenty to explore myself. Hopefully you can share something interesting I didn't think of.