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The following come from beef, chicken, fish, eggs, and you don’t get from plants: Vitamin B12, EPA and DHA omega-3, Vitamin D3, Creatine, Taurine, Carnosine, retinol.

Plant provide, but less efficiently: iron, zinc, choline, calcium (some tofu provides, but depends on coagulant used), iodine.

On the flip side, plants provide fiber and numerous phytochemicals that meat, fish, and eggs lack.

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>Vitamin D3

Irrelevant amounts come from diet, adequate amounts come from sun exposure. Everyone should be supplementing this.

>Taurine, creatine, Carnosine

Irrelevant, synthesized by the human body.

>Retinol

Best consumed from carrots, sweet potatoes, etc. Only relevant animal source is organ meat (liver), which most people aren't consuming.

>B12

Even meat lovers get deficient on this, dietary intakes are usually inadequate. My mother and sister are rabid meat eaters and supplement it, everyone who has the means to should.

Omega-3 comes from seaweed and kelp, that's where the fish got it in the first place. You can get vegan Vitamin D3 capsules where the source is lichen. B12 is available in nutritional yeast (nooch) in very high amounts, it's also in many energy drinks. None of this is a serious issue.

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