I hesitate to answer because there's a host of biases when dealing with something so fundamental to the subject.
As i recall, much of my thinking consists of non-sequitur graphics in space, muted neon shapes flickering by - sometimes illustrating an ineffable concept geometrically but mostly just inexplicably accompanying the resulting output. Memory-based associative imagery is frequently involved too (especially when dealing with the social sphere, as i increasingly do at the expense of metaphysics), and i routinely dream up places (the word 'vista' seems appropriate for some stupid and likely vain reason) for reference. These, like the flickering shapes, often seem completely irrelevant to the resulting output, however closely correlated and however strongly the connection is felt. I suck at the kind of thinking that is deliberative, task-driven and readily translatable. It's more like i'm massaging my brain from within so that it's always prepared to respond with agility and clarity.
By the way i never did figure out how to qualitatively distinguish thoughts from emotions so my description goes for 'both'.