The real question with this current delta wave is what it does outside of the south, and whether it spreads like wildfire nationwide. There's all the sensationalist BS in the media right now about the virus and "red states", but if you take a closer look, it's almost exactly the same areas (so far) that saw big surges in the summer of 2020. It's the "sunbelt" region that has it the worst. This wave last year peaked right around now, and everywhere fell off until the northern wave started in October. This summer wave started a little later than last year's, but many areas are showing signs of nearing a peak now, and I'd expect much of the south to peak and start decline in the next two weeks.
Comparing a "US Wave" to a wave in the UK isn't an apples to apples comparison because of the size differences in the countries. It very well could be that Florida peaks in a few more days and starts a hard fall like the UK is doing, but while they fall the virus spreads across other parts of the country that are just starting to see increases now.