Finding out what kind of honey you have is somewhat of a multitask approach.
Knowing when the bees are filling the supers, the characteristics of the honey, and the main floral types in your area, all come into play.
Waiting until the end of the year makes this task much harder.
A general approach would be clover and dandelion (lighter honey) as early honeys, in May and early June. Goldenrod and aster (darker honey) in September. But localized floral sources such as locust, farm plantings such as buckwheat and alfalfa, and even occasional maple can be seen in supers. I would not spend a great deal on backyard "plots" of small plantings of one thing or another. Bees will work them, but for the most part play minor roles in anything to a point of claiming this type honey or another.
Get a good plant book like "American Honey Plants" by Frank C Pellett. Then make an effort to look at what the flowers are blooming in your area. You can also tell much by the pollen being brought in. But as with much of Pennsylvania, much of the honey is a blend since large mono-nectar sources are rare in comparison to other parts of the country. So I usually have a springtime blend (light) and a summertime or fall floral type (darker) honey.