Topic filter does "appear" to be a China made jobber filter that happens to use the Valvoline numbering system. A Valvoline "labeled" oil filter was recently posted here
and the construction is different than topic.
Skipper posted that these are filters used by Monro Muffler. Perhaps Munro has separately contracted with another filter manufacturer but maintained the Valvoline numbering system. The Valvoline OF anecdotes I've seen posted here, no matter the manufacturer, had/have the Valvoline name on the filter.
As for the filter causing the oil pressure fluctuation, I suppose if when this one removed and everything else the same and it stopped, filter a suspect. Just looking at pics though, I don't see anything that stands out.