Yeshua was not authorized to grant positions at his right or left (Mark 10:35-40 ). He said that those positions had been prepared for others already, but for whom? And why was he not authorized? You can call it heretical and slap fancy labels on it all you want, but the plain truth is that there is a clear hierarchical authority relationship between Father and Son. The Father decides who sits at the right and left hands of the Son. The Father decides when the Son comes and goes. Yeshua does and says what the Father tells him.
Yeshua is divine. He is an aspect or a person (or whatever term you want to use) of the singular God of Abraham known as YHWH, but the Son is not co-equal with the Father anymore than my right hand is co-equal with my brain.