Celts and maya seems to have weaker legacy traits than their ancient era counterparts. Celts get +2 food on farmers, a pretty weak trait compared to harappans who get +1 food on all tiles that produce food as an additional +1 food on rivers without any need to have their population work a specific job and even in such case I think harappans legacy trait will give more total food than Celts.

Same with Maya and Egypt, Maya 2 industry per worker seems far inferior to getting 1 industry on all tiles that produce food and a -10% district discount (which can be worth hundreds or maybe thousands of industry per turn). Maya have to assign their population on a specific job, Egypt just get bonuses without any catch and probably beat maya in terms of effective industry produced once you factor in the -10% district cost.

It seems strange that ancient era cultures outclass the traits of their classical era counterparts with probably both more flexibility and raw power.

Maya and Celt EQs are much more powerful than Egypt and Harappans.  Celtic and Maya EQs scale with size so if you can get 6 or outposts attached to your Capital, each EQ produces 21 food/industry (and you can have 7 of them)

tested Haudenosaunee, their legacy trait is even weaker than celts's (+1 food on exploitation).

1.)it is on exploitation only. Center tile of farmer's quarter (or anything that works food under it) is unaffected

2.)if you don't have building that exploits food (like farmer's quarter) nearby the exploited tile you get no food from it.

Means the amount of food this LT gives is a joke.

Suggestion: switch Harrapains and Haudenosaunee +1 food LTs part. Means Haudenosaunee would get +1 food on food tiles, Harappans would get +1 food on rivers and +1 food on exploitation. Funny thing is that harrapans can exploit 2 food even on makers quarter if the quarter is built on river.