@miquar - Basically, the lists were determined based solely on the hotness/extraversion of the planets and signs, since when I was looking for personality traits that correlated with drug abuse, extraversion was the only one, and it's such a fundamental part of astrology in the form of the hot/cold property. I cited all my sources, which were Wikipedia and Skyscript. What I didn't cite was that wet planets and signs were automatically worse for drug abuse than dry ones since wet ones are more movable and a little more likely to want stimulation or to change according to other people, but the planetary domicile of a sign on the planetary list was more important than the sign's wet/dry quality even though it was less important than the sign's hot/cold quality.
Temperaments/elements:
1. Sanguine/Air - hot and wet - hot = extraverted, wet = moldable
2. Choleric/Fire - hot and dry - hot = extraverted, dry = un-moldable
3. Phlegmatic/Water - cold and wet - cold = introverted, wet = moldable
4. Melancholic/Earth - cold and dry - cold = introverted, dry = un-moldable
Planets:
1. Jupiter - Only hot and wet planet.
2. Sun - Strongest of the hot and dry planets, being a luminary.
3. Mars - Less distinctively hot and dry, since it's not a luminary.
4. Mercury - Naturally slightly cold and dry, but this can change based on its conjunctions, plus Mercury is considered really flitty. It can move around on this list a lot depending on what it is conjunct, but as-is, it's smack in the middle.
4.3 Uranus - All planets past Saturn are predominantly cold, but Uranus is predominantly melancholic and secondarily sanguine, temperaments which cancel each other out, and sanguine is the temperament most prone to drug abuse. It's still predominantly cold, but not nearly as much as any of the other permanently cold planets.
4.6 Pluto - Melancholic/choleric, so it's a little better.
5. Venus - Venus is moderately cold and moist.
6. Moon - The Moon is a luminary, and thus is strongly cold and moist, but it is more changeable due to its fast speed and it is wet rather than dry.
6.5 Neptune - Neptune is melancholic/phlegmatic. It is the other melancholic 100% cold planet besides Saturn. However, it does have some wetness to it, so still not better than Saturn. It is slower, but that only serves as a tie breaker.
7. Saturn - "Ice cold and bone dry." Also very slow, so not much stimulation here.
Signs:
1. Sagittarius - hot, the domicile of Jupiter, dry
2. Leo - hot, the domicile of the Sun, dry
3. Aries - hot, the domicile of Mars, dry
4. Gemini - hot, the domicile of Mercury, wet
5. Libra - hot, the domicile of Venus, wet
6. Aquarius - hot, the domicile of Saturn, wet
7. Pisces - cold, the domicile of Jupiter, wet
8. Scorpio - cold, the domicile of Mars, wet
9. Virgo - cold, the domicile of Mercury, dry
10. Taurus - cold, the domicile of Venus, dry
11. Cancer - cold, the domicile of the Moon, wet
12. Capricorn - cold, the domicile of Saturn, dry
All hot signs come before all cold signs, and are placed in order based on where their planetary rulers fall on the planetary list. I consider signs to own the planets in them, not planets to own the signs they rule. If Jupiter were in Libra, then that'd be double sanguine and would be worse than Mars in Sagittarius, but Jupiter is stronger in Sagittarius than it is in Libra and it is stronger in Sagittarius than Mars is in Sagittarius, so Sagittarius still ranks higher generally.
Now, try moving everyone's chart back a sign to correlate with sidereal astrology. All the Water signs become Air signs, which as I pointed out was the worst element for drug abuse (Fire signs only rank higher on the sign, not element list due to the fact that all the Air signs have cold rulers.)
Edit: Here are 3 lists. The basic principles are the same, but the priority, or amount of influence of each one more or less than the others and therefore before or after the others, of those principles changes the sign order significantly. Someone, please test out each one of them and see which one fits the best scientifically. I actually think it's the second one now.
Priorities: Hot/cold, Domicile rank on planet list, Wet/dry
1. Sagittarius - hot, the domicile of Jupiter, dry
2. Leo - hot, the domicile of the Sun, dry
3. Aries - hot, the domicile of Mars, dry
4. Gemini - hot, the domicile of Mercury, wet
5. Libra - hot, the domicile of Venus, wet
6. Aquarius - hot, the domicile of Saturn, wet
7. Pisces - cold, the domicile of Jupiter, wet
8. Scorpio - cold, the domicile of Mars, wet
9. Virgo - cold, the domicile of Mercury, dry
10. Taurus - cold, the domicile of Venus, dry
11. Cancer - cold, the domicile of the Moon, wet
12. Capricorn - cold, the domicile of Saturn, dry
Priorities: Hot/cold, Wet/dry, Domicile rank on planet list
1. Gemini - hot, wet, domicile of Mercury
2. Libra - hot, wet, domicile of Venus
3. Aquarius - hot, wet, domicile of Saturn
4. Sagittarius - hot, dry, domicile of Jupiter
5. Leo - hot, dry, domicile of the Sun
6. Aries - hot, dry, domicile of Mars
7. Pisces - cold, wet, domicile of Jupiter
8. Scorpio - cold, wet, domicile of Mars
9. Cancer - cold, wet, domicile of the Moon
10. Virgo - cold, dry, domicile of Mercury
11. Taurus - cold, dry domicile of Venus
12. Capricorn - cold, dry, domicile of Saturn
Priorities: Domicile rank on planet list, Hot/cold, Wet/dry
1. Sagittarius - domicile of Jupiter, hot, dry
2. Pisces - domicile of Jupiter, cold, wet
3. Leo - domicile of the Sun, hot, dry
4. Aries - domicile of Mars, hot, dry
5. Scorpio - domicile of Mars, cold, wet
6. Gemini - domicile of Mercury, hot, wet
7. Virgo - domicile of Mercury, cold, dry
8. Libra - domicile of Venus, hot, wet
9. Taurus - domicile of Venus, cold, dry
10. Cancer - domicile of Moon, cold, wet
11. Aquarius - domicile of Saturn, hot, wet
12. Capricorn - domicile of Saturn, cold, dry
