Maybe not "poor" in the literal sense of the word, and certainly much less than they used to be, but also not really fully developed countries comparable to the Western nations.
Click saver: on https://en.m.wikipedia.org/wiki/List_of_countries_by_Human_D... has Thailand on 79th place between Peru and Armenia. Malaysia is on place 62 between Costa Rica and Kuwait. The list is 189 entries long so both of these countries are still in the upper half, but there aren't western countries nearby, unless east european countries like Albania and Bulgaria count.