If a person was in an area controlled by the Third Reich, they qualify as a “Holocaust survivor”. The same would apply to anyone who escaped. It probably doesn’t count if you were in an area controlled by a German ally, but who did not cooperate with the Germans in killing Jews (e.g. Finland and Japan). Whether you should count those who “almost” ended up under Nazi control but escaped because the Germans lost the war (e.g. British Jews – who were one battle away from doom in 1940, but the British won that battle). Then you can ask about Jews who were living in Eretz Yisrael (remember the Germans controlled Lebanon and Syria, and were probably one battle away from taking Egypt) or even America (the Gestapo was already checking for where to put concentration camps, and at one point the US was working on plans for moving the government further away from the coast). Given the global nature of World War II one can argue that we are all descended from “Holocaust survivors”.
