yes, I ordered from their official shop for Europe, humboldtseedcompany.es. They also confirmed that the seeds are the same as those sold for the American market. Only the quantities in the packages change, 10 reg, 10 fem, 5 fem or 3. Compared to those sold in the States which are 20 reg or 10 fem.That's from HSC Europe, yes?
Instagram and here are the only places I follow regarding Humboldt Seed Company. There is a Facebook group if you're into that kind of thing. It's not very active[lol] but a good amount of folks in there have grown just about everything. The three you listed are fairly new offerings with Gazzurple being the latest so probably not much out there yet. Grow Diaries might be another place to check.
peace
Given the legal limitations of eu growers, it seems to me a good strategy for them to have made fem packs of 3 seeds.