There is no longer a 'Blondie line' or a 'White Phoenix line' - there are countless animals in countless different lines with this mutation. At one stage you might have said there were Blondie and White Phoenix lines, but that hasn't been the case for many years now, and even at the time, they were the same mutation. Every single albino Carpet Python on the planet has the same mutation, unless you want to believe that the White Phoenix mutation occurred independently (*cough cough* *bull$#!t*) and is a deactivation mutation of the exact same gene, which still makes it functionally identical. To say every albino in the world is in one single line (or playing devil's advocate, two lines) totally makes the concept of 'line' meaningless. You can use incorrect terminology if you want to, but it makes your words meaningless/wrong.
Before anyone jumps on me, I'm willing to entertain the possibility that the White Phoenix animal did pop up in the wild and it was just an incredible coincidence that it happened shortly after people started breeding Blondie animals, but even if that's the case, it's the same mutation (or phenomenally unlikely, it's an exactly equivalent mutation). To be clear, I'm not accusing anyone involved in the White Phoenix project of lying, and the story may well be entirely true, but it's still the same mutation.