Edited for clarity and typos.
Try array-entering this formula in H15. All the machine numbers agree with the last two expected machine numbers except the last two ...... 13 and 3. My results are reversed and I believe correct. It also doesn't report machines that were not used.
I changed your array formula in F15:F24 to in order to trap errors and not return users who had used machines "0" times.
In the formulas that had the LARGE k argument hardcoded like thisI changed to Hard coding those numbers makes things more difficult than they need to be. Using ROWS($1:1) increments more easily. I changed that in other formulas where it applies. It also traps errors by not returning 0s.
I also changed the formula in C15:C35 to I believe you will find it to operate more smoothly and easier to follow.
Anyway with the exception of the reversed 13 and 3 these results agree with your expected in J15:L24, and where there were no users the cells show blanks.
Let us know what you think.
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