Greetings and welcome, I suspect that the Pleioblastus could be correct or the Albostriatus could be correct but not together. It could be Sasaella masamuneana 'Albostriata' or perhaps Pleioblastus argenteostriatus or as you suggest one of the Pl. chino forms, or one of the vast number of other Pl variegated forms. If it is the Sasaella, it will have wider and longer leaves and will fade to lots less variegation over the summer, plus there could be some other ID traits you can look for.
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Brad Salmon, zone 5b/6 Southern Indiana
Winters -20 to -25C. Summers 30 to 35C , humid. 115 cm annual precipitation, frost free from May through early October. 259.3 meters elevation. Growing 150+ species.
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