I really understand this.
It’s always used in closet - candy photos where there is a whole rail of blouses arrayed in a rainbow.
I do hang a huge % of my wardrobe, and I do have at least 3 tops categories- SS tops, including a collection of almost- dressy T’s; LS knit tops in varying weightand LS button- front shirts in different fabrics ( excluding my gardening/ hiking tops); Then, jackets and blazers are in different weights and colors. Pants more by silhouette and warmth because colors are even more limited.
My issue is that I’ve learned I choose items most often by weather temperatures and then silhouette.
So I’m more likely to say, today I am likely to need fleece, or today heavy cotton, or lightweight cotton , linen, short sleeve.
In addition, I might have to change during the day. . So I would move up or down the warmth- rating!
So I’m more likely to arrange by warmth . Which is a lot like item type, of course. But unless there are a lot of items in each, then that doesn’t make for much rainbow- striping of closet as a whole.
I do arrange by lights to darks and prints v. solids.
I don’t think there’s one right way, and I kind of try out different things from time to time. For example, silhouette of pants ( since most are dark) and sometimes shorter boxier tops from long- over- lean options.
I am also using some of my sorting/ organizing results to learn more about curating wardrobe. There can be a sort of visual appeal of how things look on the rail— either a soothing monochrome palette or a lot of similar shaped items ( every time I see the closet photos of perfect white- gray - black tops and bottoms I have a momentary urge to bag up my entire wardrobe and go buy those pieces ) but not really wearing the items, whereas more disparate items may look more chaotic, but each has a purpose.
I am not likely to become minimalist and have one jacket ( 4 Kenzie utility jackets, I’m looking at you), sweater, pants and so on, but I am working understanding I’m so fickle about fabric weight and warmth that I get a lot of variety by wearing one or 2 of several different fabrics and styles ( even within a “ season “) , so can probably do less duplication of each, especially if I stick to color palette.