Alternative approaches to arrangement/composition?

[Marcus Kirby <marcusloops@gmail.com>]

I generally loop guitar, get the skeleton of the drums/bass, then
arrange via adding/subtracting.

Does anyone have any different philosophies/methods that they use for
arranging and composing? Borrowing techniques from different fields,
maybe something like compositions based on "game of life" or art, or
whatever.

Sorry for being vague, but I don't even know what exists.