Bordeaux Blanc producers

Can anyone recommend a list of Bordeaux Blanc producers that display typicity (Graves, Pessac-Leognan) for tasting/studying at the certified level? I would like both historically classic producers, regardless of how expensive they might be, as well as more affordable/approachable ones that I could purchase myself for practice. I don't see a producer profile on the site, which is why I'm putting it out there. Thanks!