Found

Painting by American artist Carolyn Wyeth. Although often over-shadowed by her better-known younger brother, Carolyn was also an accomplished painter, known for her use of unusual angles in her work.

Paintings by Panamanian artist Humberto Ivaldi.

Paintings by Indonesian artist Djoko Pekik.

(And a photo of actual, modern-day sumo, for reference.)

Depictions of sumo wrestlers, otherwise known as rikishi (Kuniyoshi, Kunisada, Ay-O).