I'm tryng to get this to work, but I keep getting the error:
=ARRAYFORMULA(TEXTJOIN(", ";FALSE;IF(A22:A32=A2:A10;K22:K32;"")))
Array arguments to EQ are of different size
Here is the file with the data, attempt and the expected result: https://docs.google.com/spreadsheets/d/1gh5w0czg2JuoA3i5wPu8_eOpC4Q4TXIRhmUrg53nKMU/edit?usp=sharing