Summary of the number of clusters classified in our sample divided per category (NDE = no diffuse emission; U = uncertain; RH = radio halo; RR = radio relic; c = candidate; * = flux density measurement not reliable; N/A = not applicable). We note that a cluster can be classified under multiple categories, such as both RH and RR. The percentage on the y axis is with respect to the total number of PSZ2 in LoTSS-DR2 (309 targets).