These are mutually exclusive terms.
Meanings depend on context and total verbage used.
Single Family always mean da detached home sold as "fee simple" (u own the land).
Income property is one u can produce income by renting, most of the times for multiple tenants or mixed use tenants.
Investment is any property which is attractive to an investor.
You should work with a good buyer agent who works with investors, if ur interest is investment.
I would be glad to do a 45 minute "Get to know you session" with u, if u r interested.
703 635 8209