By comparison.

I had intended this for yesterday, following the size of G. S. Arnott - BUT - "Mike stopped play". My trip out to Mike allowed a shot away from home.
From left to right:-
"Common or garden" - G. Nivalis, dating back to when my knowledge of Snowdrops was 1. Single.    2. Double.
"Viridapice" - although the green outer petal ends aren't all that visible
"Woronowii" - with it's non-snowdrop looking leaves, not unlike the green, shiny Leucojum.