Last time I was here in April, I did not see either of these two oils. My Walmart is now stocking Valvoline Restore and Protect and Mobil 1 0W-8 (my first time ever seeing 0w-8 in person.) The R&P was already sold out of the 5w-30 flavor
Not oddities just an evolution of oil grades & sales pitches.
5w-30 most likely still being the dominant sales viscosity makes sense it's out of stock on this new product offering from Valvoline.