I'm not saying that you don't experience a different variety of mixed episode that is different/worse/etc. but if OP is experiencing elevated energy as in hypomania/mania along with negativity/sadness/agitation that is a mixed episode from a psychiatric standpoint I think.

A true depressive episode wouldn't come with increased energy level and a true manic/hypomanic episode would not have such pronounced negative emotions. Wouldn't what OP is describing be a textbook mixed episode?