Other than Man

Every moving thing that is alive shall be food for you; I have given everything to you, as I gave the green plant.
Genesis 9:3 (NASB)

One little gem I’ve discovered while reading Jewish commentaries on Scripture is that Jewish theologians have swatted away dweebs who interpret the text poorly for a very long time. This was written by R’ Jacob ben Asher who lived between the years 1269 and 1343.

כל רמש אשר הוא חי, “every moving living creature, etc.” This expression includes all creatures other than man.
Tur HaAroch on Genesis 9:3:1

No. You can’t eat people.

Totally Wicked

But you must not eat meat that has its lifeblood still in it. And for your lifeblood I will surely demand an accounting. I will demand an accounting from every animal. And from each human being, too, I will demand an accounting for the life of another human being.
Genesis 9:4-5 (NIV)

Someone recently commented that God’s prohibition on eating meat with blood in it pointed to the pre-flood world being filled with people who literally ate other humans alive.

Maybe! The world was described as completely, totally wicked, and this certainly enters the imagination.