WB and BM aren´t paired up much. It´s usually Bm and Kaido, who are closer as peers, Big Mom says they both ruled as emperors for decades, they skysplit together etc(Though BM also fought WBP sometimes, Pero said he wanted to kill Marco, idk what the lore on that is) and WB didn´t shout out BM when talking about who ruled the seas in those days..
WB:Shiki(top rocks pirates based on flashback, Oda wanted WB to shout out Shiki, Shiki went to his ship in chap 0. Both seem to rival sengoku a bit)
BM:Kaido
Shanks:Teach
Luffy:Buggy
WB:Shiki(top rocks pirates based on flashback, Oda wanted WB to shout out Shiki, Shiki went to his ship in chap 0. Both seem to rival sengoku a bit)
BM:Kaido
Shanks:Teach
Luffy:Buggy
Oda has made WB and Shiki relationship much more clear now, they were old buddies on the same crew. BM was also part of the crew but she was a later addition same as Kaido, and they got closer
WB never did a shoutout to Shiki in his death, only to Roger and kind of to Xebec due to Teach connection. In the Roger era it was mainly WB, BM, and Roger. Shiki fell off pretty quickly due to his loss, while others went undefeated as captains of their crew. BM even acquired a red poneglyph which Roger had to sneak around to get
BM is and has always narratively been the bigger force than Shiki post-TS with more accomplishments. Pre-TS she wasn’t even introduced properly and Oda kept her role a big secret, even thru Lola hint