A landlord policy can be a commercial policy or a personal lines policy.It's the same as asking if you should buy a single family rental or a 1 unit building.Focus on the coverages and disregard the name of the policy.

At this time I manage and renovate majority of all my units to keep cost low but most likely not the best use of my time although I'm skilled at it.

So on a 3br unit where all the utilitites are included in the rent aand paiid by the landlord, you can expect to get up to the FMR as the rent for your unit. 

have a rental (multi family 2-4 units) needing major rehab. interested in learning what work can be learned/performed easily and what needs to be hired out to a contractor. recommendations for learning resources for DIY rehab (good youtube channels, etc) would greatly appreciated!

My recommendation would be this "property type" for a 2-4 unit if there is inventory in your market.

I own a commercial unit, and I’m trying to determine a fair rental rate for the space.

House hack a 2-4 unit with the lowest down payment loan you could find. 3.5% FHA or 5% conventional.

Apartment noises - neighbors sounds (flushing bathrooms from other units, sirens from street, etc.) 

The property consists of 202 units.

Looking for building from 1950-2010 anywhere from 10-100 units.