PS Plus numbers include the lowest tear subscription that just includes online play and a few games. Microsoft stopped reporting Gamepass numbers back when the lowest subscription they had was Live Gold. Now that Live Gold is retired, the numbers would be more comparable, if they ever release them. IIRC there were 30+ million gold accounts in the 360 era. I would doubt that number is lower today, but you can't just ad the Gamepass and Live numbers because Gamepass Ultimate includes both.
When looking at monthly active users, Playstation is slightly behind Xbox bases on the numbers
here and
here, with a trend of growth on the Xbox side and a much flatter trend for Playstation. I don't know the exact criteria it takes to be an "active user", though. But it's an impressive to have such similar monthly active users with such a disparity in installed base. Remember that these accounts aren't PS5 vs Xbox Series, but any machine that can access PSN or Xbox networks, so Microsoft's lackluster install base from One is still included against PS4's massive installed base. I'm sure PC is helping Xbox numbers, though.