Recently I’ve seen several of the newer Airbus A321s and 737-800s have charging ports and power outlets standard. A couple of low cost carriers (intentionally) omit them, and it seems like a coin flip on the older 737/319/320s, esp for US domestic flights. I’ve taken a couple transatlantic narrowbody flights recently and TAP and Icelandic both had power at the seat. My biggest pet peeve as that, for many flights, you just don’t know until you actually get to your seat.