Turns out, after all that, I have like nothing to say about these.
Left to right, patterns are Heinz, Fibonacci, none, none none. Yarns are miscellaneous stash, ranging from SWM/Nylon, MCN, Wool/Nylon, Merino/Nylon/Silk, Cotton/Wool/Nylon
4 of these are ostensibly for my feet, and the one enormous pair on the far left is for my partner.
My favorite pair to knit is probably a tie between the middle pair, and the green/black Fibonacci pair. My most worn pair thus far is the Kroy FX pair on the far right. They are the thickest as well, and when I made them I used up all of the yarn.
In construction terms, 3 of them are top down: Heinz, Fibonacci, and the blue/orange/green striped pair. They use, in order, a heel flap & gusset (x2) and a strong heel.
The remaining pairs are toe up using, in order, a short row heel with gusset, and a heel flap and gusset. I spent some time experimenting with placement of the reinforcing stitch for the pairs on the far right, the three on the left totally lack reinforcing stitch. It's an interesting selection of socks and techniques, but the only thing it can tell me is what I personally prefer.
My toes are not long, so the wedge toes that start/end wider fit me better. I like a star toe with extra gores and that obfuscate the spiraling decreases/increases. And my insteps are high enough to absorb quite a lot of extra gusset fabric before bagging out. I think in the next three months, I'll be continuing to experiment with toes and heels, and gussets. And if my partner is lucky, maybe one in five pairs can continue to be for them.