In /helpop there is also a /helpop umodes that list
Umodes
Here is a list of all the usermodes which are available for use.
==---------------------------oOo---------------------------==
o = Global IRC Operator
O = Local IRC Operator
a = Is a Services Administrator
A = Is a Server Administrator
N = Is a Network Administrator
C = Is a Co Administrator
And then a /helpop oflags that list
Oflags
Here you will find the flags that can be placed inside of the O:Lines
==-------------------------------oOo-----------------------------==
o (locop) Local Operator
O (globop) Global Operator
C (coadmin) Gets +C on oper up. Is Co Administrator
A (admin) Gets +A on oper up. Is Server Administrator
a (services-admin) Gets +a on oper up. Is Services Administrator
N (netadmin) Gets +N on oper up. Is Network Administrator
So that could be the issue.
Also as I am a Services Admin and Global Oper I get +ao on my network while a Local Oper gets a +O.