"+Alphabetical order typically is organized numbers first, followed by A-Z+"
There is no 'typical'. Different computer systems use differing character-sets that have letters first or numbers first. This can based on their ASCII numerical value or a customized sort program within the software.
I do not believe that you can change the way iTunes internally sorts the data.
You can, however, manage the 'Sort Artist' &/or 'Sort Album' fields for any song file (or group of files). You may have to be creative to get the numbers 'floating' to the top of the sort. i.e. - Putting a leading character such as a '.' in front of the numeric Artist or Album. Figure it out for yourself if it is truly important to you.
Best of Luck
