How is the Phantom Troupe so strong?

I want to preface this by saying I’ve only read the manga and seen the anime once so I might’ve missed stuff.

The Phantom Troupe had 13 members at one point, all of which are pretty strong. Even though they’re not all on the same tier as Chrollos who’s in the league of unstoppable(for most) nen users, they’re all at least top 1%. I don’t understand how. To be a top tier nen user you need luck, talent, intelligence, etc.

We know nen abilities are designed by their users and are limited in strength by the amount of aura someone has, but some people use their aura more efficiently.

Even if it could be explained that the requirements to be accepted into the troupe are extremely high, so only powerful people can get in, the initial 6 founding members are all quite strong. Imagine you and your childhood friend group all found magic. What are the chances you all become insanely powerful when the magic you’re learning is a “secret” technique not everyone knows and mastering it is extremely difficult? I’m assuming they had a master but as we know having a nen mentor doesn’t mean you’ll be strong. There are tons of people in HxH who learn nen and seem to have a mastery of their ability but are still weak due to things outside of their control.

For each member of the Phantom Troupe to be as strong as they are, they all need: innate talent, an insane amount of aura or extremely efficient aura usage, and basically complete mastery of their nen abilities. Now I could see some of them being hard workers cause of their life in the shit-hole that is meteor city, so that explains them being able to design useful nen abilities and mastering them, but being innately talented at nen and having a lot of aura are both things completely outside of their control. What are the chances all 13 members of the Phantom Troupe have an innate affinity towards using nen and an innately high aura to allow them such strength?

Am i buggin