evanze
In general, I think of it in the terms you might hear someone on the food network describe a dish. "High notes", "low notes", "mellow", "pungent". On Sunday I made biscuits and sawmill gravy (good southern boy that I am). Sawmill gravy has a distinct profile, it's a base of nutty/earthy from the roux and peppery. I start describing the constituent parts, however if you asked me to describe "peppery" now it's getting more difficult. The only way I would have to describe it would be how your tongue and throat burns when you taste it.
You can see I'm getting more vague and conceptual.
It's entirely possible that as you say this is just "textual" data, however that feels like a drab description of what feels to me like a more vivid experience. It feels as if there "more to it" than just recalling information.
Unrelated, but I also think it's interesting how as we start talking about other senses how entangled memory is. We aren't talking about a nondescript sphere hallucination in my visual field anymore, but rather a memory of my Sunday brunch. When I imagine the smell of beer I inevitably will recall the last time I was at the bar with some mates and the spatial/visual memory of that space as well as my emotional state, etc.
Regardless I hope the distinction I was drawing comes across clearly.
Regarding spacial thinking, yes it seems fairly accurate however where I would expect it to break down would be recollection of colors, touch, sounds, tastes, or smells. But I don't feel I experience such a breakdown in ability to recall those either albeit in the same conceptualized not-connected-to-my-realtime-senses way.
Out of the examples given in this thread I would say faces are the most challenging object to recall. Though, depending on the distinction of the features I can also do that without much difficulty.
Personally, I can imagine my apartment in detail down to the relative placements of most objects, proportions, the colors, the way the wind enters if the window is opened. I can do similar for past apartments going back 8 years as well as my parent's home. Hell, I can imagine the Reno's steakhouse from my hometown that I haven't been to in over 13 years in much the same way.
I do not consider myself to have aphantasia, however none of the "visualizations" I mentioned are hallucinations as some comments in this thread imply. I do not perceive them with any of my senses, including visual, as if I was there now. Rather it is more of a complex conceptualization in my mind.