Splitting the cleric into the Holy Trinity

I really don't like the cleric class. I feel that is assumes so much out of your world. That you have gods that you can worship and dedicate your life to and that you have undead that can't be reasoned with. I find these weirdly specific and Runequest kind of helped me visualize what a different way to approach gods can look like. I like how different cultures have different (and sometimes contradictory) myths and legends. I find it harder to achieve in Dungeons and Dragons as I couldn't focus on all the gods of a setting as the cleric's god had to have an increased importance than the rest of the pantheon because the cleric's god was the only god that mattered mechanically. Furthermore, undead are boring to me and would like to add more unusual creatures. The undead I include often talk or are smarter than the average skeleton. I am not a fan of prescriptive 100% spelled out character abilities. I like that there are multiple applications for a lot of spells and m...