There are many other varieties of fundoshi as the variations on the principle of a loincloth are almost infinite. For example, the mokko-fundoshi (literally "earth-basket loincloth" because it looks like the traditional baskets used in construction) is made like the etchyuu-fundoshi but without a front apron; the cloth is secured to the belt to make a bikini effect. The kuro-neko fundoshi (literally "black cat fundoshi") is like the mokko-fundoshi except that the portion that passes from front to back is tailored to create a thong effect.
I’m 5’3” 145lbs and the O/S plus fit OK. It’s big but I hate tight thongs. I’m going to cut the back and just sew it back together to customize the fit. I just didn’t think the other size would fit. Unfortunately there were only 2 choices and I really like the accessibility of this style! I’d only buy again if I can’t find more size options in a similar style.