The reason they are not on the list is that Humboldt Seed Orginization have been out of business for close to two years and have not released any strains recently, either.
Unless your seeds came in a square wooden container holding a glass vial, they are not HSO seeds.
You can check the HSO website where they state they are unable to trade if you are doubting anything.
They are located in Spain and are an "umbrella company" of Dinafem and both were closed due to contravening Spanish laws regarding giving tutorials related to cultivation techniques.
Which is all very unfortunate as HSO had some wonderful strains that I miss very much!