I invest in a very blue collar city (Milwaukee, WI) and I have seen other investors’ signs around.

As a local hard money lender we’ve used all of them. admiral title is the best in Knoxville and also check out blue ridge title.

Huge space center being built, hub for SpaceX, NASA, Blue Origin.

Get ready for some BRRRR blues.

Whereas C-D class lends itself towards blue-collar families looking for affordable spacious 1400 sf 3-beds including the basements (where the rent is still above the mortgage), B-A class is often occupied by young professionals around my age (mid 20's to Early 30's) who pay up to be WHERE they want live not so concerned about WHAT they are living in, often a 500-700sf unit w/o a basement. 

Baking soda and dawn blue soap in a paste like toothpaste.

It is a 3 bed plus separate  studio unit w a tiny peek of the ocean.

I live in the Greater Detroit area of Michigan and from my quick analysis so far just using the 50% rule I have found out that only the properties (single family homes) which are from the 1940s and 50s located in B, B+ neighbourhoods which have the blue collar population are priced such that I can get a positive cashflow and if I look at something even as much as 30 years old, it's either a negative cashflow or very CoC return of just 4-5%.

I live in Ocean Springs (~30 mins from Gulfport, MS).

Being on the ocean certainly helps with the breeze.