[quote=@Specter189]
[@Cruallassar] Wait, but a Kom'rk is from the Clone Wars show, and even then with limited production for the faux Deathwatch


[/quote]

Firstly, not just the Clone Wars, it has also appeared in Rebels.
Secondly, both of those are canon.
Thirdly, DeathWatch isn't the only Canon Mandalorian group out there, which satisfies your desire for hardcore Mandalorians whether you use canon exclusively or not.
Fourthly, you can't exclude canon. You can only include Legends.
Fifthly, considering every Mandalorian group shown...which is two different groups, including DeathWatch, btw...has been seen using it, I think it can be considered as pretty mainstream Mandalorian. Which means it is entirely fair game for...acquisition...

Those are not necessarily in order, so feel free to pick and choose the points there that seem most relevant, or re-arrange them as suits your whim.