I operate a kitchen remodeling company in Chicago, Il and I would just like to know if anyone here knows what green building products are popular with homeowners these days?

Define "green" in this context.

Granite countertops are popular with homeowners, fairly durable, low VOC, and usually have low embodied energy / carbon-footprint.

Induction cooktops are popular, more efficient and responsive than old-school electric stoves, and usually lower carbon footprint than gas ranges (except on heavily coal fired grid regions), and are better for indoor air quality since they only emit combustion byproducts into the room air when the food is burning.

I personally love:

Recycled glass countertops

recycled glass tiles

induction cooktops

Any LG appliance with an Energy Star rating

Crestwood Cabinets are beautiful custom cabinets that are all formaldehyde free with low VOC finishes. Check them out at https://hi-techbuilding.com/crestwood/