I would view it as 10th generation and Switch 1 as 9th generation. It really depends on when the next Xbox and PS6 launch though. If rumors are true that the next Xbox launches in 2026, then we could get the PS5 in 2027 (or even 2028). With Switch 2 launching in 2025, that should be close enough to link all 3 together. Switch was released over 3 years before the PS5 & XSX, so you'd think it wasn't linked with those two, but it has actually spent more time "competing" with them than PS4 & Xbox One (the Wii U spent more time competing with PS4 & One than Switch did).