The only conclusion I can arrive at is that the Chile Rayado is a very old cross between Goat's Weed and a Jalapeno of sorts that was stabilised way back when and has become an heirloom.
Let me explain. The Goat's Weed, apparently originating in Venezuela, was considered unique (before we were exposed to the Chile Rayado) for a Capsicum anuum in that it has fuzzy stems and grey fuzzy leaves. In the words of the late great Beth Boyd "it is a handsome plant". It is C. anuum var glabriusculum - typical wild anuum. If you've ever looked at a tepin or Bolivian Rainbow or Chile Rayado you will see that the pedicel has a crook neck with the little white flowers facing outwards. The ripe fruit are erect ("facing heaven")
Now let's consider the Jalapeno as a general representative of C. anuum var anuum. The leaves are dark green and glabrous. The flowers are large and the pedicel curves at the base and the flowers face downwards. The ripe fruit hang downwards.
Now. Chile Rayado. The plants resemble the Goat's Weed in the fuzzy stems and grey fuzzy leaves but are not stiffly erect (bad choice of adjectives with Tinkerbelle around
) like the Goat's Weed but has a more open branching habit like a typical anuum var anuum. Also Chile Rayado has typical anuum var anuum flowers.
Heat-wise it is more along the lines of anuum var glabriusculum - the very aggressive rasping heat similar to a C. frutescens.
So there you have it - my dissertation proving it is not a Jalapeno but a genuine heirloom cultivar that is most likely a very old Goat's Weed x Jalapeno selection.