There’s some confusion about where Avery’s Albino comes from and who created it. Some say it’s a true albino variety of the A-Strain (Albino A+ is just leucistic, not true albino). Others say it’s an albino isolation of the Cambodian strain.
 
Avery’s Albino shares some qualities with all the strains mentioned, so it’s hard to say which “theory” is correct. However, it definitely seems more likely that it’s an albino variation of the Cambodian strain because it shares more growth characteristics and looks uncannily similar.