Hi, and welcome to the forum.

Well, you've certainly got what must be the three most expensive cities in the US covered, though on that salary, you should be ok. To get some feel for the three different cities, you may want to take a look at the major newspaper for each city online: The NY Times, The LA Times and the Chicago Tribune. All three papers have regional sections and you can access the real estate advertisements online to get some idea of housing costs.

NYC and Chicago have reasonably good public transit systems, though if you choose to live in the suburbs, you'll probably find it necessary to own at least one car. In LA, public transit is almost non-existent and driving everywhere is a fact of life. LA is probably also the most spread out city of the three you are considering, so that living in the city may still mean a long commute for your husband.

If your husband is coming over on an H1 visa, you will be getting an H category dependent's visa (H3 or H4, I think it is), which means you will not be allowed to work. You may be able to change this after you have lived in the US for a year or two, but it isn't easy.

All three cities have their share of South Asian immigrants and it should be possible to find familiar foods and other products in the various "ethnic" neighborhoods.

That's a start, anyhow. I'm sure others will have more information for you here.
Cheers,
Bev