I do something like this loosely based on a bread from Paula Wolferts ‘Cooking of the Eastern Mediterranean’.
Flour, yogurt, starter, or yeast, and seeds mixed in if I’m baking it, or on top if it’s in a pan. If I have a broiler I stick it in for 30 seconds, if not I dry toast the seeds.
So my pick would be wheat flour, buckwheat, buttermilk, yeast. And I would mix it today for a deeper flavor.