Top 20 Regiments sorted by total top 4 Placements in each category.
League 2/3 Medals are included in the total tally. So, '2 (1 league 2 Medal)' means that regiment got 2 total medals in that specific category of which one was a league 2 medal.
These also include NWBC, which is a little more casual. (for Gold Catergory top 10, 15th K-KA and 77y have won one NWBC)
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Edit: also keep in mind that 2nd and third places for all Leagues of S01-S03 of NWL are missing, therefore some older regiments like 14e, 91st, 92nd, Nr.24 could get some more medals in those categories.