Need help in finding good hashtags

Hey guys! I’m wondering if someone could help me to find hashtags which are used by people who sell something or better - by companies , and from 1 tier countries. I will give you an example. A hashtag “realtor” is an ideal example, because it’s used by like ~90% of USA people which is 1 Tier country , and also all of these individuals are selling something or they are providing some kind of service.

Could you give me more of a good ideas? How do i come up with other hashtag that are like this realtor? Let me know, thanks!