Maushold is actually not the first Shiny Pokémon to have this weird color scheme - the pattern goes waaaaay back to when Shiny was first introduced in Gen II, where some Pokémon originally having white colors (such as Dewgong @Quuador mentioned) simply have Shiny variants colored in a slightly different white.
I personally remember this by “blue-ish white” and “yellow-ish white”. 
the SNES plastic in 1994 vs the SNES plastic in 2024
Also I can’t even tell if there is anything different in either. Is there the white and off white on them anywhere? I genuinely don’t see anything on them.
Shiny Magnemite top 5 imo
I know shiny gengar got already mentioned but it needs to get a pic posted to highlight the shame
the shiniest shiny doesn’t need a second thought tho
Ah yes, the shiniest pokemon of them all is black rayquaza 
. So shiny.
I really like shiny Arcanine. It looks like some sort of Raikou/Base Arcanine hybrid.
Piss dog
Yellow is a shiny colour, but I just feel like it really missed the mark on what cool things they could have done. I know Lucario is inspired by anime protag stuff, so the yellow/blue makes sense here
I’ve always looked at skins in Smash and thought they looked much cooler. The 5th is my personal fav
