I found some new info about the dimming types.
#1 Intelligent Dynamic full array local dimming, Controls the light output of individual blocks of these LEDs means the system can light very specific parts of the picture, while leaving others dark.
#2 Dynamic edge local dimming, in which the LEDs in each region are adjusted independently based on picture content and can turn themselves off when the picture is black.
#3 Dynamic edge frame dimming, which doesn't include as many zones, is less precise in its control, and does not completely turn off the LEDs in all-black scenes.
The website that provided me with the above info didn't mention Edge frame dimming (non dynamic) but I'm guessing its the same if not worse than #3.