HELOC’s don’t underwrite like mortgages: actually I don’t know if I have ever heard of one that pulls all 3.
It’s basically 3x as expensive for the pull which is probably a big part of underwriting a HELOC these days cost wise... I think BOFA is on TU FICO 8 same as they provide under the FICO Open Access, based on that disclosure it is not an industry option and it sounds like FICO 8 though I am a little confused at the last part of it though.
Congratulations regardless!