I don't know. I guess for me it's more helpful to think in terms not of different writer types, but of different writing processes (creating/editing).
For example, during a more creative spell, I might write quite a bit for my story, but not all of it makes sense. This might be part of the actual story, or it might be notes on
culture/locations/clothing. During the editing phase, I go through what I wrote and look at it more critically. The editing might involve small things like word choice, or larger things like pacing/order of events in a plot/character use. All writers do both, to varying extents. It is the extremes which are dangerous (For example, I get anxious about everything not being perfect and as such I don't write; roleplaying is helpful for me because I can write without worrying as much about everything being perfect).
I feel that the architect ideal of expecting to write everything perfectly once you have an idea for a set-up would create a lot of unneccesary presure; similarly, in the gardener description, it feels lazy to not go back and edit the plot to be better*
*I am reffering to published/publishable novels. Due to its collaborative nature, roleplaying is inherently more gardening, and I absolutely love it this way. Although it's also true that many people build their obelisks (of plot) within the jungle!
I feel that classifying Brandon Sanderson and Stephen King as architect and, respectively, gardener, obscures some of the real differences between their genres. Stephen King can afford to not start with an elaborate set-up of cultures, world, politics - his settings are similar to the real world, so he doesn't need that. The life of his novels lies, superficially, in a frightening gimmick, but more importantly in his characters. Perhaps he could be seen as an architect of characters?
Characters and plot coherence are only two of the ways that authors can shine. I've read books were both were meh, but the setting was absolutely astonishing. I've read stories were none of these things were memorable, but they were saved by humor in the narration.
But...I guess the very best books tend to shine in the attention paid to all, or most of these things. And, like all writing, it's a process of creating and editing...on repeat )