I'm starting to understand about Dieffenbachia seguine where the main characteristics are basically the tall cane stem with arching lance shaped leaves. This particular variety seemed to be a new version of which it has more yellow than the usual light cream colors for it spots.
Unlike other complex foliage types where the colors are more than three tones, this one however only hold 2 colors only.
The closest ID that I think it may refer to be is D. 'Tropic Rain' or Dieffenbachia 'Mayan Jade'
but I may be wrong as I'm unable to find a reliable source for this one.
The contention begins that there is a similar colored one that have almost the same pattern known as Dieffenbachia 'Mayan Jade'. As for now, I'm just putting both of them here for reference base factor - at least it may be the same one or perhaps with a slight different variation.
Hopefully, I might get closer in discovering all of their true ID as most of their names are introduced by plant vendors which may not be very accurate or reliable.
and more yellow when in full sun (pic below)
How to Care & Cultivate Dumbcane Plant:
Dumbcane - Dieffenbachia - Best Indoor Plants