Just started reading John Wyclif's book On Simony. Since there are so many declarations of heresy these days. I thought I'd post Wyclif's understanding of types of heresy. By the way, lest you forgot, Wyclif was declared a heretic and years after his death his remains were exhumed and burned. The biggest reason for this was his translation of the Bible into English.
Three types of heresy are the best known: namely, simony, apostasy, and blasphemy.
He sees these three in relation to the Trinity, simony being expressly against the work of the Holy Spirit.