These markings exist in real horses; you can find real-world examples of them to inspire you! They should not appear too symmetrical or resemble symbols, patterns, etc.

Roan - Snowflake - Splash - Tobiano - Blanket - Overo - Sabino - Dominant White - Leopard - Rabicano - Snowcap - Varnish Roan - Fewspot

These markings were created for Dungeon Coursers. They can be more fantastical, outlandish, and take the shape of symbols*, patterns, and other 'unnatural' appearances!

Crowned - Cuirass - Blanched - False Leopard - Harlequin - Filigree