I would bet good money on that 90% of people from EU could not name a single member of the EU Commission.

I wouldn't bet on that. Zensursula is already a well known meme. Doesn't change the chance of her or anyone else in the commission facing any consequences.

She is the president of the Commission, overseeing its work. I'm not sure if she's technically a member.

I always figured that the president of the European Commission is a member of the European Commission but I wasn’t 100% sure if that is “technically” the case. I did some research and The list of Members of the von der Leyen Commission¹ clarifies that the president – along with the vice-presidents – are included among the 27 members of the “College of Commissioners”.

¹ https://commission.europa.eu/about/organisation/college-comm...

You cannot vote out a single member of the government/parliament in many democracies, it is not an intrinsic characteristic of any system we call so.