The cultivars of Salvia officinalis that are listed in our database as Purpurea and Purpurascens have different height and width data, which makes me wonder whether the cultivar we have listed as Purpurascens might actually be a subspecies that was once known as Salvia officinalis var. purpurascens and was later reclassified as a synonym for Salvia officinalis subsp. oxyodon.
Salvia (Salvia officinalis subsp. oxyodon)
I'll gladly help you move photos and data if we can come to a consensus.
As for Salvia officinalis 'Purpurascens Variegated,' I agree that it is a superfluous entry if all of the purpurascens salvias are variegated. Are there any non-variegated ones?