While it varies a lot and I probably miss many for not being home, I see at least every month when the weather is good

• When there were younger families in the neighborhood, there were always kids looking to fundraiser in various ways to help fund kid activities. Selling Girl Scout cookies is a ver well known example but many kids activities do this
• now I mostly see home improvement solicitations, “we’re in your neighborhood doing x and we’ll give you a special deal if you do it now”. I don’t know if those are ever legit but it’s a well known scam
• election stuff. Way too much election stuff. New candidates need many signatures of support to get on a ballot. Local politicians want to become a familiar face. Activists want signatures for ballot initiatives or referendums