On: Are any words the same in all languages?

[nojvek]

Hindi/Gujarati/Sanskrit has mata and pita.

[occamschainsaw → nojvek]

And mummy/pappa would be used be used colloquially in Gujarati, apart from the more formal mata/pita and other terms like ma/bapu.

[nojvek → occamschainsaw]

Correct.

I believe forms of “ma” and “pa”/“ba” are almost universal for mother and father.

[sn41 → nojvek]

That's mainly Sanskrit. It has various forms in most Indian languages. For example, Malayalam has "mataav^" and "pitav^"

But the commoner words for parents in Malayalam is "amma" and "appa/acha".