1785/921/2400 is enough for consistent 60FPS on Mariko.
I'd assume 1785/921/1996 is probably good for slightly less consistent 60FPS on Erista.
Both with handheld visuals of course.
If someone (probably masagrator lol) makes a triple buffer patch FPS drops will be less severe and you could get away with slightly lower clocks.
I'm using 1224/844/2366 on Mariko OLED + Handheld. FPS around 59-60. Also as far as I know Masagrator is not interested on Mario games so idk if he would do a triple buffer patch.