I work very much like my dad, as I build I just refer to the image in my head
On the other hand, some people keep meticulous notes and diagrams about what they are going to do
This isn't a knock - I have some very sharp co-workers that do better work in some areas even than myself who need to compulsively diagram/take notes
Each has its pros and cons. For me the pros are I can get to building super quickly. It means on a microlevel I can explain things to people who will help with the build in great detail and make sure they "build the right thing"
On the other hand, the con is communicating at a macro level. I don't have anything diagrammed out typically, or notes even, so sometimes it feels to people like they are working with a black box and I have to make a conscious effort to document and diagram
Interesting stuff
For the people here debating whether they have it or not: my take away from many years of therapy is that when it comes to mental stuff like this, it's pretty much just whatever you say it is and how much it impacts your life
If you think you have OCD but it's not interfering with your day to day life, you're probably fine, even if you feel like it's overboard
On the other hand, even mild OCD can be devastating to a different person if they feel like it's making their life hell
So while not quite the same thing, if you think you have aphantasia and you think it's to the point where it's affecting your life in one way or another, than you probably do
If you think you have it but you don't really notice/care and feel like you get by just fine, then you might or might not
Moral of the story is that I hope it's just a thought exercise for you and nothing you're sweating about