1st triad: Great proportions in 1, blazer may be too short in 2, and white blazer works imo in 3. Favorite combo: 1, because it's minimal and matchy matchy.
2nd triad: Great proportions in 1, pretty good in 2 (can you untuck a little with the top? I almost want to see it not quite as cropped), and white blazer too long for skirts imo in 3. Favorite combo: 1, because of its simplicity.
3rd triad: I'd like the top a touch longer in 1, you nailed the proportion in 2 (white blazer definitely works), and I think 3 works as well. Favorite combo: 1 & 2, because of cohesive colour scheme/minimalism/classy impact.
4th triad: I'd like the top a touch shorter in 1, you nailed the proportions in 2, and I don't personally like the white/cream mix in 3. Favorite combo: 2, because of the deep blues together.
5th triad: The proportions in all three work. Favorite combo: 1, because it's minimal and matchy matchy.
6th triad: I'd like the top a touch shorter in 1, and the proportions work in 2-3. Favorite combo: 3, because of how you pulled off the juxtaposition of so many elements.
7th triad: You nailed the proportions in 1-2, and I don't personally like the white/cream mix in 3. Favorite combo: 2, because the blazer + lace top + all white is so pretty.
8th triad: What about adding your blue belt in 1, and you nailed the proportions in 2-3. Favorite combos: 2 & 3, because of the matching + high contrast in 2 and the cream/white texture mix in 3.
9th triad: What about adding your blue belt in 1, the sheath seems a bit short for the blazer in 2, and the white blazer seems too long in 3. Favorite combo: 2, because of the colour mix.
My apologies for the huge post, Ingunn!