There seems to be more than one lily sold as "White Tiger". It is an old lily (1968) and the Lily Register gives a scant description. Back then the descriptions were minimal to what they are today.
Name: Joshua Melbourne, Victoria, Australia (Zone 10a) Köppen Climate Zone Cfb
It might be that the original 'White Tiger' is no longer extant and that Lily (Lilium 'Sweet Surrender') may be sold under that name (certainly a number of the photos attached to 'White Tiger' bear a resemblance). I have seen 'Sweet Surrender' advertised as a white tiger lily.