"A prodigious savant is someone with a skill level equivalent to or greater than that of a prodigy, regardless of any cognitive disability. The most common trait of prodigious savants is their seemingly limitless mnemonic skills, with many having eidetic or photographic memories. Prodigious savants are extremely rare, with fewer than one hundred noted in more than a century of literature on the subject. Treffert estimates that fewer than fifty or so such individuals are alive today."
" is a person whose expertise spans a significant number of different subject areas. In less formal terms, a polymath (or polymathic person) may simply be someone who is very knowledgeable. Most ancient scientists were polymaths by today's standards. The term was first used in the seventeenth century but the related term,polyhistor, is an ancient term with similar meaning."
The only other person I've come across that comes close to rivaling Leonardo da Vinci is Nikola Tesla. This will be explored even further in my book!