That’s a very good question.
I don’t know if Allan Heinberg or Jim Cheung are fans of the Huntress themselves, but I’m honestly inclined to believe that any resemblance between Kate Bishop and Helena Wayne/Bertinelli is purely coincidental for various reasons.
The first obvious one is that Kate’s look is largely based off of Clint Barton’s who’s signature look predates Helena Wayne who was created in 1977. Clint’s been around since 1964 which means the colour purple and the Huntress-looking mask were signatures of his long before Helena Wayne made them cool.
It is also worth noting that at the time of Kate Bishop’s creation in 2005, Helena Bertinelli was serving as the Huntress during that time. In addition to being consistently depicted as angry/tough-as-nails by writers, she had also been wearing a more generic-looking mask for nearly 16 years before getting her Helena Wayne-inspired mask around that same year.
Personality-wise, I don’t think Kate has that much in common with Helena Bertinelli since they both respond to situations very differently. At best, they both have the ‘personal trauma as a main motivator’ in common, but beyond that they have completely different personalities. It can be argued that her personality is closer to that of Helena Wayne who is more relaxed, more optimistic, and more self-assured as a heroine, but there are also many other heroines like that between Marvel and DC.
The same is also true about their social status as wealthy women. That’s not really a unique trait for either Kate or Helena since many heroes are wealthy socialites, CEOs, heirs, etc in the genre.