What status do Orthodox Jews give to Reform Jews?

I’d like to get some clarity on this issue. In Orthodox Judaism, are Reform Jews considered mumar, min, or neither?

Rabbi Yitzhak Yosef, Israel’s Sephardi Chief Rabbi said Reform Jews “have nothing, no mitzvahs and nothing else,” in response to a High Court ruling recognizing Reform and Conservative conversions for citizenship purposes. He has also called Reform synagogues “idolatry” and the movement one that “falsified the Torah.”

That’s certainly a lot more extreme than the things my own Orthodox friends have said. So I’d like for the Orthodox Jews in here, when you respond, to please give the source for your claim, so that I can know you genuinely speak for Orthodoxy and not just for yourself and your friends.

I’m not a scholar, so if I make any mistakes, just let me know.

My understanding is that there are two terms: Mumar (apostate): מוּמָר and Min (heretic): מִין . An apostate is someone that has left Judaism for another religion (like if a Jew becomes a Christian or Hindu). A heretic is someone who is under the umbrella of Judaism, but has beliefs or practices that are unacceptable.

Until today, I had never heard an Orthodox Jew say that Reform Jews are apostate. I suspect she is confusing mumar with min. But before I reply to her, I need to make sure I have my facts straight.

In Orthodox Judaism, are Reform Jews considered mumar, min, or neither?