Yes, it seems it hasn’t been translated into English. Until now!
Here’s my translation for the last part of the SN46.42 commentary, talking about the correspondences:
The treasure of the mindfulness awakening factor The literal meaning should be known already. Just as the Wheel Treasure of a Wheel-Turning Monarch is the first among his treasures, the mindfulness awakening factor precedes the four stages of the Dhamma.
The elephant treasure of a wheel-turning monarch is born in a grand body, lofty, vast, and mighty. Here, the treasure of the investigation of dhammas awakening factor is born of the grand Dharma body, lofty, vast and mighty and is therefor comparable to an elephant.
The horse treasure of a wheel-turning monarch is swift, agile, and strong. Here, the treasure of the energy awakening factor is swift, agile, and strong. Being swift, agile, and strong, it is thus comparable to a horse.
The gemstone treasure of a wheel-turning monarch scatters the darkness and reveals the light. Here, the treasure of the awakening factor of joy which is entirely wholesome, scatters the darkness of the kilesas and reveals the light of understanding. Destroying darkness and revealing light, it is thus comparable to a gemstone.
The wheel-turning monarch’s woman treasure allays his bodily and mental angst and subdues his fevers. Here, the treasure of the awakening factor of tranquility allays bodily and mental angst and subdues fevers, and so is comparable to the woman treasure.
The treasurer of a wheel-turning monarch, having put an end to confusion and doubt with respect to what is valuable, makes the king’s mind unified and clear. Here, the treasure of the awakening factor of immersion has the capacity to provide what is desired, namely absorption. Having put an end to confusion and doubt with respect to what is valuable, it makes the mind unified and clear, and is thus comparable to a treasurer.
The counselor of a wheel-turning monarch assuages his concerns. Here, the treasure of the awakening factor of equanimity, freeing the secret agitation arisen in the mind, establishes neutrality, sets aside pride, and assuages concerns. Assuaging concerns, it is thus comparable to a counselor.
(Obviously happy if any real translators have feedback on the above translation )