When they mention WBA “regular” belt what fighters come to mind

[Marchegiano]

Povetkin and Chagaev

[sicko]

Charr of course who is holding that BS Belt Hostage and don't want nobody else to have it and the WBA is allowing it despite his inactivity

Charr must have some very wealthy people behind him or something, kinda strange how he is allowed to do that for this long

[DreamFighter]

Well no, his first major title defence was against Rosado. That's taking opinion out of it

If we're taking quality of opposition into account, I'd start with Jacobs personally. Why start with Geale?

he was given the title before the geale fight.

i dont know why you are asking about facts.