These are all in continuity as MCU and only werewolf by night doesn’t stick to MCU’s visual palette and tone.
Eternals might be more serious but it still has references to the wider MCU and it’s intended that it’s in the same universe where the snap happened.
Moon Knight has no references to the wider MCU but it is expected he will cross over with the other characters down the line.
Werewolf By Night is the only one of those 4 you could argue may not be in the same continuity as mainline MCU but if blade or ghost rider ever actually get rebooted then he would just be in that corner of the MCU and cross over with them.
You have cosmic MCU corner, street level MCU corner, supernatural corner, the mutants corner, and big world saving MCU corner aka most of the avengers and characters like F4. Marvel comics has always been like that and just because the movies are doing that too doesn’t mean that those movies are “elseworlds”/stand alone.
What I want is marvel to give a director free reign to do whatever they want with one of their characters whether that be the content rating, the visual style and tone of the film or whatever they please without it having to be part of the MCU.
Just imagine if marvel had hired Sam Raimi to make Marvel Zombies instead of Dr. strange and let him do whatever he wanted cause it wasn’t part of the MCU continuity and just a one off horror film! I have no doubt it would have been amazing. Instead they’re making a cartoon for Disney plus? Or are they since I haven’t heard a peep since the initial announcement. One more for the chopping board.