Do any of these initials match that long list of initials that Q posted ?
AM JR JB DB CG
Yes. Several found on this part of line, bold is mine ....
[FBI [JC][AM][JR][MS][BP][PS][LP][JB][MK][JC][SM][TG][KC]]
"JB" is found several times, once in a WH line (I think Biden), and then in FBI line (I think James Baker), and then in CIA line (I think Brennan), and then in a "LEAKS" line, I think more likely Brennan, but could be Baker of FBI.
"DB" and "CG" are not in ANY Qdrop.