My starter, Breadberry, is a rye guy.

Once I discovered how it much Breadberry grew when being fed rye, I knew I couldn't go back. That said, I've tried mixing in spelt, regular whole wheat, and baker's flour. But I've always come back to rye. I'm also about 1:1 (i.e., 100% hydration) of flour to water, but have definitely varied that a lot. I notice that the stiffer my starter is, the more jagged it's graph is on my Breadwinner dashboard.

But that's just me, and everyone's starter is different. So what do you feed yours and why?