Hi there I wouldn't disagree that they are Gray tree frog tadpoles. I had a little trouble identifying them because the tadpole colour is too dark in the video. As to my experience I have always found that Gray tree frog tadpoles in the later stages of metamorphosis have a flaming orange/red tail. Based on the pattern of the tail it definitely looks like GTF tadpoles so don't have too many doubts there. BTW I have no idea what a water table is but if you found them on your back deck as an egg mass or just tadpoles that makes it pretty fair to assume they are tree frog tadpoles as tree frogs are commonly known to lay eggs in rain barrels, old vehicles/boats that collects rainwater, and any other junk left to collect water where it requires them to climb. Toads like shallow widespread marsh, and pond frogs (ranidae) like permanent bodies of water. Keep in mind that in your region the Gray tree frog (Hyla versicolor) and Cope's gray tree frog (Hyla chrysoscelis) overlap. These frogs are differentiated at the chromosomal level because they are exactly identical in appearance. However males are identified based on their mating call so if you really care to know that exact species Cope's gray tree frog has a faster trill rate and higher frequency. Hybrids occur too because females of Hyla chrysoscelis will breed with Hyla versicolor during warm temperatures if male H. chrysoscelis mating call is a very fast trill rate. If temperatures are cool especially during night when they are active usually starting around May, females are more attracted to the slower produced advertisement call of H. chrysoscelis. So I actually have no idea which species it is, LOL. Watch out for calling males especially on warm rainy nights to tell their call it's not hard. I also live in an overlapped breeding zone too so I find that 90 percent H. versicolor and 10 percent H. chrysoscelis, but it's probably different for you. The tail is a huge giveaway for GTF tadpoles. Let me know if I helped at all!