Proper connector would be Molex 09-01-6091 but those are gone.
I do have a few 09-01-7091 remaining. Same plug but with mounting flanges. The mounting flanges can be real easily cut off.
Talked to Molex about why they would discontinue a still somewhat popular 2574 connector series and replace it with a new and incompatible 172159 series. Their only answer was "I don't know". Turns out the demand for this new series is lower than demand was for the 2574 series. Asked if they could start these up again - answer: "not a chance".
Pinball wasn't the big consumer of these. When these were still made, I had a couple larger customers routinely special ordering up to 5000 at a time. With quantities they were buying - I'm not sure why they came to me for them when they could have gone straight to Molex ... but I was glad that they did.