Not who you asked, but also have aphantasia.

"think of" is far too ambiguous here to really meaningfully drill into the differences of _how_ people think about things. I know that a stop sign is a red octagon (with a white boundary) with the word "STOP" in the center. I could draw you a plausible picture of one without issue. Thinking about it just involves no imagery.

Information you might rely on visualization for, I don't (because I can't). I couldn't tell you with any confidence what my family that just visited this afternoon was wearing (something I assume is easier for people who would remember it visually), but I can recall what happened - in what order, where, who said what, etc. - throughout their visit.