If exploring the plethora of collect-em-all ideological labels on the left helps you enrich your political understanding then go for it--but when push comes to shove--the best leftists aren't the ones who obsess over the minutia between every possible label, but the ones who move forward arm in arm with like-minded people to create a tangible positive difference where they can.

That being said my personal go-to label, especially when talking to folks who are less politically inclined, is just "socialist," because it's a bit clearer than something like "leftist" which will be interpreted by many Americans as left-wing/liberal, and also far less daunting to explain (and to understand, from an uninformed perspective) than any of the more particular and nuanced labels. To answer your initial question in the title though, you're my comrade.