Update on AT&T N5 Band
As I was writing my other article about ping/latency, I noticed that my AT&T cellphone started using 5G/NR, N5 band.

My speed test result still appear to be about the same. I get over 200Mbps down whether I use LTE, 5G (NSA) or 5G/NR. Latency appears to be about the same but we are early in the game. My RSRQ value is the lowest I've seen for AT&T as well. This is similar to what I see with T-Mobile 5G/NR.
Another thing to note, I am switching to N5 when downloading or running speed tests. Otherwise, I am either LTE or 5G/NSA.