Use formulas instead of Power Query for tidy files, with a visible source path and clear parameters that teammates can review ...
The FILTER function extracts every matching record while XLOOKUP only returns the first result.
Excel's query tool reshapes messy imports into 1NF, so AVERAGEIFS replaces hacks and your summaries run faster.
Merge lists even with typos and inconsistent names. Tune the similarity threshold, use a transform table, and audit results ...