This is an idealized painting style that I've been chasing since my first SD2.1 embedding 'Classipeint' - it represents, essentially, where I want my own paintings to be when I pick up the brush again. Realist, but not overly polished. Gestural and loose, but not quite impressionistic. It's a versatile style that can be applied to modern, classic, fantasy, or sci-fi imagery. And this is probably the best realization of what I've been chasing (Flux, I couldn't ever get nearly where I wanted it).
For a related, but more loose and gestural painting aesthetic style, check out my Eldritch Sketch Painting LoRA.
Trained on the base Z-Image, rendered with Z-image Turbo. You may need to say more than once 'oil painting' in your prompt, to keep it from leaning a bit photographic.