Unique, Ordered List of Most Frequent Numbers in a Two-Dimensional Range 9

I recently received a request from James, who was interested in a formula-based solution to the following problem: given a two-dimensional range containing a mixture of numbers and empty cells (which I am defining as being either “genuinely” empty or as containing the null string “” as a result of formulas in those cells), generate a unique list of those numbers in order of their frequency within that range, with the most frequent first. What’s more, if two or more numbers occur the same number of times within that range, then they should be listed in order of their size from smallest to largest.

For example, for the dataset in A1:F6 below, we would return the list as given beginning in I1.

Unique, Ordered List of Most Frequent Numbers in a Two-Dimensional Range

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