Don't think you can say Jose tbh. When he left the club we were arguably at our lowest point since Sir Alex left. Club morale was horrific, fan's were divided, we were in freefall, not sure why people think he could have turned it around or more importantly, wanted to turn it around. Jose falls in the same bracket as Ole who had simply run out of time, there was very little to suggest Ole could have turned it around either.
When LVG was sacked we had at least just won a cup, our league form was pretty horrific but it wasn't all bad and he left with the club being somewhat stable. So despite his football being boring and usually sending me to sleep, i'd probably have to say LVG.
Rangnick and Moyes didn't have enough time to really provide a proper conclusion. But neither seemed to be heading anywhere, our football under both was inconsistent and both alienated a chunk of the squad.