The small stump grinders that you can rent from Home Depot (Toro SGR13) are easy to use and easy to move around a flat yard like yours appears to be. They take about as much effort as a push lawn mower, maybe a bit more. But as dfosterf notes, they cut slowly. So be prepared to spend hours at the larger stumps, and try to cut off as much material as you can with a chainsaw first (you can ask the arborist to do this if you don't want to run a chainsaw). Also, if renting, do yourself a favor and buy new cutting heads. The rental place may be able to swap them if you check and ask too. But generally, the ones you'll get are going to be very dull because nobody checks. If you have a trailer and can easily move around the larger grinders, that might be worth it. The small Toro will fit into the back of a truck easily or even a mid-sized SUV.
For the larger trees, consider getting them milled into lumber/slabs. This will depend on the tree but most hardwoods have some value, so you can sell them on Craigslist, FB marketplace, etc to woodworkers. You will save money with the arborist by not paying them to haul the larger logs to the dump or wherever they take them in your area. You might be able to find a local sawyer with a mobile sawmill who will come to your property and mill them for you. Or if you have a trailer, winch, and know how to use a peavey you can bring the logs to them. They may be able to kiln dry the slabs for you too (easier to sell/more valuable if dried). Some sawyers will be willing to pick the logs up too, but you might pay more for this. You might be able to find an arborist who will do all of this for you as well, or a sawyer who will do the work for free if they get to keep the lumber. Depends on the value of wood in your area though.
If you can tell me the types of trees I can tell you roughly how much demand there is for the lumber from woodworkers. The pine tree (B) and smaller shrub (C) are probably not worth anything but the larger trees could be. If you can't ID them yourself, post photos of the bark and the leaves.
Generally speaking, walnut is always in demand, as is cherry but sells for less, and maple is common but still may be worth a few dollars per board foot. I'm guessing the white tree is a birch, which is a nice wood to work with, but its trunk may be too narrow to make decent lumber. If it's a poplar of some type it's probably not worth anything.