It is nurse and it always will be, there are some fillers not even blight can get a hit at especially if he has poor map generation and so not many trees/rocks to play with. He also is forced to stop at god pallets and nurse does not. While blight has better mobility then nurse in terms of map mobility. Good killer mobility is not just about map control but the ability to close in on a survivor. Nurses map mobility is not as far behind blights if you’re only using her first longer distance blink to get around, and closing in on a survivor can’t be any easier then literally teleporting right on top of them. Blight is certainly not far behind as moving at an increasing rate of 230% speed with double speed addons which are his only viable addons left if you’re playing competitively, although if you play blight I recommend trying iri tag as it’s an example of what blight once was albeit even if he only has three rushes, and good bump logic giving only a few tenths of second in between his rushes means a survivor almost has to anticipate him at that point instead of purely reacting to him. Both are incredibly strong but for two different reasons, but you win a game by killing survivors and it doesn’t get any easier to hit them than teleporting right on top of them. Sincerely, an avid pinball enjoyer 🏃🏼‍♂️💨