I'm reading this rn and it's pretty kino. Sheikh Bedreddin was heavily influenced by Ibn Arabi, a classical Sunni qadi and faqih before completely rejecting the dominant Sunni ideology. His students organized a revolt against the Ottoman state (the Sheikh's responsibility in this revolt remains a debate) and demanded, among other things, a fairer division but also, and this is notable for the time, equality between Christians and Muslims. This is remarkable given that the revolt was mainly led by Muslim Turkmen.
Also Bedreddin's metaphysics reminds me a lot of Advaita Vedanta