Here is some data from season 4 / patch 2.3 for machine/organ drops. Keywarden drops are a combination of my own drops and those reported by others in the party; the 2 double drops were both for a party member (in the same game).
T10 keywardens
Act 1: 33 runs -- no machine 9, single machine 24
Act 2: 42 runs -- no machine 12, single machine 30
Act 3: 42 runs -- no machine 7, single machine 34, double machine 1
Act 4: 42 runs -- no machine 14, single machine 27, double machine 1
Overall: no machine 42/159, single machine 115/159, double machine 2/159
T10 ubers
Discord: 42 runs -- double organ 18, triple organ 24
Chaos: 42 runs -- double organ 23, triple organ 19
Turmoil: 42 runs -- double organ 24, triple organ 18
Fright: 42 runs -- double organ 24, triple organ 18
Overall: 168 runs -- double organ 89, triple organ 79
Results seem consistent with the guesstimates of 70% for machines and 50% for triple organ.
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View 2 seems more compact and probably makes a better image base, but the original view still feels "better" to me.
Possible additional customization would be to choose the thousands separator: space, comma or period.
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Here is some data from season 4 / patch 2.3 for machine/organ drops. Keywarden drops are a combination of my own drops and those reported by others in the party; the 2 double drops were both for a party member (in the same game).
T10 keywardens
T10 ubers
Results seem consistent with the guesstimates of 70% for machines and 50% for triple organ.