For the quite a while I wondered why, after installing RimPy, subscribing to this database, and then clicking "Sort", it still sorted nearly according to alphabetical order, with the exceptions being Harmony, Rocketman, and some other mods which are widely known to be placed on top or bottom.
Yes, the description mentions that this is intended and so on, but shouldn't there be a little more difference after subscribing to this database?

Well, by right-clicking a popular mod that you've subscribed to, such as Vanilla Expanded Framework or Alpha Animals, it will open some options, one of them being "Modify/Share sorting rule".
Click on that and it will open a new window that shows Save Rules, Share Rules, and Show Details.
Clicking Show Details will provide some tips on where the mod should be placed.
If the mod is not placed as recommended, there is a yellow, triangular warning symbol that appears at the side of the mod name on the list.

There isn't much advice in Show Details, as many mods including popular ones have no recommendations. But so far, this is the only assistance that I can perceive in regards to subscribing to this database to arrange mods.
The rest will probably rely on online manuals or trial-and-error.