Pictured in post
#14 are knickers. Linked in the o.p. are not knickers nor are the "long shorts" or other ersatz knicker offerings suggested by others. Ideally, the knickers pictured in post
#14 would have some kind of cinch to snug the leg opening around the wearers calf. Calf being the operative word. Proper knickers come below the knee and reach to at least 1/4 calf. Long shorts are not designed to be used with socks. Knickers are designed to be used with tall socks that will reach the wearers knees. That's about as clear as I can make it. The closest I've come to cycling knickers were the purchase of a pair of cross-country ski bib knickers decades ago. They were originally over $200 and had a matching jacket that I didn't buy. They must have been seriously discounted because I don't think I would have paid that much for an item of clothing then or now. They were fantastically complex and expensive feeling and looking. I got some red (the bibs were powder blue) wool socks to go with them. I usually wore them when I was out on my fixie in mid-winter NYC (circa 1977). Oddly I don't know what became of them. I still have other items of clothing from that era of my youth but not those knickers. Hmmm.
H