How rare is...?
Think about this:
Someone with aphantasia who also has short-term memory, SDAM, auditory hyperphantasia, Blank Mind Syndrome (BMS), and Intrapersonal Communication.
I just so happen to have all of the listed instances and have done my research.
Around 40% (average) of the world has Intrapersonal Communication. Around 21% of the world has Hyperphantasia in one sense. Around 20% of people have BMS. Around 20% of the world has Short Term Memory Loss Syndrome. Around 2% of the world has SDAM. Around 1.5% of the world has Aphantasia.
There are 8 Billion in the world, just about. This means 3.2 Billion have Intrapersonal Communication. This means 672 Million have both IC and STMLS. This means 134.4 Million have IC, STMLS, and Hyperphantasia. This means 26.88 Million have IC, STMLS, Hyperphantasia, and BMS. This means 537,000 have IC, STMLS, Hyperphantasia, BMS, and SDAM. This means that 8,064 have all IC, STMLS, Hyperphantasia, BMS, SDAM, and Aphantasia.
These numbers are off because I rounded down to 8 billion, but this is slightly true to an extent (please correct me if Im wrong, I would love to learn).
I just so happen to be one of (by my best estimation) 8,064 people globally that have Intrapersonal Communication, Short Term Memory Loss Syndrome, Blank Mind Syndrome, Severely Deficient Autobiographical Memory, Aphantasia, and a sense of Hyperphantasia all at once. More specifically, I have Auditory Hyperphantasia, making my instance just that much more rare.
Doing the math a bit better, this makes me (not by originality or significance on any stance, not as an individual) 1 of around 9,000 that share all of these. If we consider those with just Auditory Hyperphantasia, it's likely closer to 4,000 (as auditory hyperphantasia is the 3rd ranked hyperphantasia, behind olfactory and gustatory, ahead of touch and episodic).
1 of an estimated 4,000 who share the exact neurodivergencies I listed. If I were to list every single neurodivergency I had, probably closer to 1 of 200-500.
Think on this. You are more rare than you think. Keep it to yourself. As a mental note.
Always remember: Even if you are 1 of 5,000,000, or 1 of 8,182,829,000, you always will be 1 of 1. There's only one of you.
(Disclaimer: This is not meant to be scientifically accurate to real-world numbers and official data, this is a personal estimation based on rough research and dive-deep research of aphants in the world.)