Common examples: Is there a maintenance charge with every call/issue? 

What you are facing right now is a common hurdle when the scope is just too wide.

Loopnet and Crexi are the most common platforms for listings, but many brokers don't list properties there.  

What is also very common is to charge a more aggressive security deposit or do a regular security deposit plus a monthly Security deposit alternative on top of rent to ensure you are properly Collateralized.

Rather than seeing two travel nurses traveling together and splitting expenses I find it's more common to see a couple traveling together.

This was common in FL back in the day but no longer as most title companies won’t do these transactions anymore due to the liability and in many states (if not all) due to the fact it is no longer legal.

With housing prices and all prices so high, multi-gen households will be more common here in the US like it is in other cultures and HH is an excellent option for older and younger family gens to stay closer and save $. 

Establishing a corporate entity, such as an LLC or corporation, under which the property will be vested, is a common prerequisite.

Of course, you need to use your common sense when comparing properties.

It is very common for a PM to sign on behalf of the owner.