docs: add OpenArt family cross-links (with licenses) + feedback note

README.md

@@ -114,6 +114,45 @@ If you want the **complete** OpenBrush corpus (75,313 paintings), use the parent
 - [openbrush-anonymous-masters](https://huggingface.co/datasets/jaddai/openbrush-anonymous-masters)
 - [openbrush-impressionist-landscapes](https://huggingface.co/datasets/jaddai/openbrush-impressionist-landscapes)
 
+<!-- OPENART-FAMILY:START -->
+## Related datasets
+
+Part of the **OpenArt** family of open, public-domain art datasets. The license is shown
+beside each — `MIT` for the OpenBrush painting sets, `other` (mixed public domain: CC0 /
+PD-mark / institutional open access, recorded per row) for the OpenArt subject sets.
+
+**OpenBrush** — 2-D fine art (paintings, prints, drawings), WikiArt-sourced, `MIT`:
+
+- [openbrush](https://huggingface.co/datasets/jaddai/openbrush) — flagship — 75,313 public-domain paintings · `MIT`
+- [openbrush-anonymous-masters](https://huggingface.co/datasets/jaddai/openbrush-anonymous-masters) — unattributed old masters · `MIT`
+- [openbrush-impressionism](https://huggingface.co/datasets/jaddai/openbrush-impressionism) — Impressionist movement · `MIT`
+- [openbrush-landscapes](https://huggingface.co/datasets/jaddai/openbrush-landscapes) — landscape genre · `MIT`
+- [openbrush-portraits](https://huggingface.co/datasets/jaddai/openbrush-portraits) — portrait genre · `MIT`
+- [openbrush-religious-art](https://huggingface.co/datasets/jaddai/openbrush-religious-art) — religious / biblical · `MIT`
+- [openbrush-renaissance](https://huggingface.co/datasets/jaddai/openbrush-renaissance) — Renaissance period · `MIT`
+- [openbrush-baroque](https://huggingface.co/datasets/jaddai/openbrush-baroque) — Baroque period · `MIT`
+- [openbrush-impressionist-landscapes](https://huggingface.co/datasets/jaddai/openbrush-impressionist-landscapes) — Impressionist landscapes (cross-cut) · `MIT`
+- [openbrush-van-gogh](https://huggingface.co/datasets/jaddai/openbrush-van-gogh) — Vincent van Gogh · `MIT`
+- [openbrush-monet](https://huggingface.co/datasets/jaddai/openbrush-monet) — Claude Monet · `MIT`
+- [openbrush-rembrandt](https://huggingface.co/datasets/jaddai/openbrush-rembrandt) — Rembrandt · `MIT`
+- [openbrush-renoir](https://huggingface.co/datasets/jaddai/openbrush-renoir) — Pierre-Auguste Renoir · `MIT`
+
+**OpenArt** — mixed-medium subject collections (paintings + photographed objects),
+museum/library-sourced, `other` (mixed public domain):
+
+- [openart-animals](https://huggingface.co/datasets/jaddai/openart-animals) — animals & the natural world · `other`
+- [openart-items-artifacts](https://huggingface.co/datasets/jaddai/openart-items-artifacts) — human-made objects & decorative arts · `other`
+- [openart-mythic-creatures](https://huggingface.co/datasets/jaddai/openart-mythic-creatures) — mythological & fantastical beings · `other`
+- [openart-painterly-foundations](https://huggingface.co/datasets/jaddai/openart-painterly-foundations) — painting-forward fine-art core · `other`
+- [openart-portraits-classical](https://huggingface.co/datasets/jaddai/openart-portraits-classical) — the human figure & portraiture · `other`
+
+## Feedback & collaboration
+
+I'm always open to **feedback** and to **suggestions for other datasets** worth publishing —
+open a discussion on this repo or reach out on the Hub. I'm also **open to collaborations**
+with others in the community.
+<!-- OPENART-FAMILY:END -->
+
 ## License
 
 MIT. Underlying artworks are public domain (all artists died before 1954). Structured captions are original works released under MIT.