It's pretty obvious that all the Admirals have two means to fight. Basic fruit powers for fodder control, effective because of the aoe and the fact even most commanders are helpless against it and one against Top Tiers. Kuzan is proof of this.
ye
they have 2 means of signature attacks
the 1st one only highlights their devil fruit while the second one is cqc ( where they combine it with their df )
for
akainu its --> daifunka --> hell hound
aokiji --> ice age --- > ice glove
fujitora --> meteor summon --> raging tiger
kizaru --> yasakani sacred juel --> ama no murakomo sword ( or prob his light kick )
for greenbul we only know his devil fruit attack till now which is groves of wrath , his cqc type would most prob be swordsmanship
BUT
fujitora is still highlighted as the swordsman of admirals , greenbul really havent given those vibes to me
while with 1 look at fujitora u can see :
- the troupe of blind swordsman
- wano samurai attire
- and now it looks like he also has a sword from wano
- he is also very honorable which most swordsmen are
which is why i think its very retarded when people call him a non-swordsman