Plumber, electrician, general handyman. 

Also, bringing someone else along, whether inspector, plumber, electrician, etc someone who could also provide value in the walk thru as well

I would appreciate any recommendations for roofers/electricians/plumbers/AC.

An electrician can inspect the electric system including the lines, poles and boxes.  

This week I had an electrician that I've never worked with really step up and hustle to get through an inspection quickly so we could move to drywall.

Do you have a handyman and a list of specialist services plumbers, hvac, electricians, etc to handle the bigger problems?  

But if you have single family rentals or small multis, you may be better off with a PM who has their own maintenance crew so that the PM has more direct control in taking care of general maintenance and subs out work where licensed plumber, electrician,etc is needed.

Have retail trades such as plumber, electrician do the work.

PM companies will always charge/pass on the cost of licensed work from Plumbers/electricians/capital improvement/apartment turnover stuff.If the property is stable, you could find somebody local for 5-7% and include regular maintenance work, court shows for delinquencies, finding new tenants, collections, leases, etc.Start with Craigslist.

She has saved me from many headaches and saved me thousands of dollars with her savvy advice.Then inspector, attorney, handyman, landscaper/gardener, plumber, electrician, hvac guy, PM and photographer/video.