heme iron is something of animal origin, being from hemoglobin. the iron available in any plant or fungus is non-heme as none of them have hemoglobin.non-heme iron is still found in milk and eggs.
Souces: https://hemochromatosishelp.com/heme-iron-vs-non-heme-iron/https://www.hsph.harvard.edu/nutritionsource/iron/https://www.nal.usda.gov/legacy/fnic/iron