There is actually no such thing as the best type likely to survive any post-apocalyptic world. It’s all about skills, experience, knowledge, making hard decisions, keeping sanity intact and the will to go on. In fact everything about a person will be tested. If you judge types only by their cognitive function, though, few types have much better chance than the others in surviving post-apocalyptic world. My pick will be either INTJ or ISTP. I picked these two types not because I’m related to one, my father (INTJ) and the other is myself (ISTP) but because these are two thinking type that operate in exactly the opposite manner, either ways giving them unfair advantage over the other types in case of an post-apocalyptic scenario. INTJ will likely have their own lair, an underground bunker or fortress, equipped with 24x7 surveillance, advanced weapon systems, with workers, soldiers and henchmen at his disposal. It will be an impenetrable enclosure for anyone to breach…except the xSTP types. INTJ will make cold calculated decisions without hesitation, will have vast amount of knowledge, information but his sanity will be tested which will decide if he is going to be either the “weird invisible leader” or “the archetypal villain”. ISTP on the other hand is a lone wolf, highly self-sufficient, efficient, silent, well trained, extremely experienced, well informed, skilled weapons specialist with a knack of learning about anything that he comes across at fast pace as he go on giving him an edge in improvising, anywhere, anytime with deadly precision. Not to mention the legendary ISTP stealth. He will practically be a ghost; patient, ever silent and ever observing. His will to go on will too be tested but for an ISTP traumatic experience is likely to make him stronger, more prepared making him a hardened veteran rather than hindering. It’s not for nothing that a post-apocalyptic world is called the typical “ISTP paradise”. Another thing, ISTP is very unlikely to become another man’s soldier because his extreme independence. If you see them working under, say, an INTJ or an ENTJ it’s only because the ISTP wants to momentarily engaged in that act for a specific reason. Their “commander” will never be sure where their loyalty lies and wonder if they really are under their control. Anyway, if you pitched these two types (INTJ vs ISTP) against each other each type has 50-50 chance of winning and surviving. I’ll give you an example of the battle between the two. First one is on that show ‘Breaking Bad’ where after much cat and mouse game Walter White aka ‘Heisenberg’ (INTJ) becomes unpredictable and in an impulsive act he shot Mike Ehrmantraut (ISTP) fatally wounding him. This is a case where INTJ won over ISTP. On the other hand is the case from the show ‘Walking Dead’ where Michonne (ISTP) fatally stabbed Philip Blake aka ‘the Governor’ (INTJ)...and he never saw that coming. A contrasting case where an ISTP won over INTJ in a typical ISTP fashion. In both cases, however, the ISTP characters came close to killing the INTJ characters only leaving them either at mercy, but causing irreparable damage, or because the INTJ always had a contingency plan for another contingency plan forcing ISTP to abort killing the INTJ. Either way these two types, in my opinion, are most likely to survive a post-apocalyptic world than the other types.