TBF the British Monarchy would eat tomatoes on their pewter plates, because of the acidity the tomatoes would begin to dissolve the plates, Injecting various poisonous elements into them.
Also, tomatoes ARE poisonous as they are a nightshade and contain solaire. Same with potatoes. The modern concentration of solanine is negligible, though, so unless you have a sensitivity or allergy to nightshades you should be fine consuming large quantities.
Fun fact: potato plants under the right conditions can produce fruits resembing cherry tomatoes. They are extremely poisonous.
Another fun fact: Since both potatoes and tomatoes are nightshades, you can graft them together and have a plant that produces both potatoes and tomatoes.
They compete for nutrients though. It’s a novelty, but will eradicate your soil and produce crap plants.
called the “Tato” in the fallout universe
I think Tato(e)s are just mutated tomatoes. You never really pull them out of the soil to harvest the potato part.

according to the terminal in the Prydwin it’s the hybrid of the two

fallout.fandom.com/wiki/Tato_(Fallout_4)

Tato (Fallout 4)

A tato is a consumable in Fallout 4. Tatos are the result of cross-pollination between tomato and potato plants. The new consumable looks like a tomato on the outside, but the inside is brown.[1] Commonly cultivated in the Commonwealth, its fruit is easy to grow and can keep one from starving, but their taste is described as "disgusting."[1] The player character can plant and harvest tatos at settlements to provide a food source for settlers. Each tato plant will produce 0.5 food units when...

Fallout Wiki
I am confused as to how the TBF relates to the rest of your comment.