Well this is all relative, all of the "better" rides take a bit more experience. The Frank does take a little more time in the seat then the spit but I think you can get more out of the Frank. After having said that I laughed cause I'm a complete bafoon in the spit (all thumbs) . But seriously all the so called "harder rides" are interestingly enough the "best" rides.
Corsair= This plane changes dramatically once you learn some good flap management skills
K4= Throttle control, throttle control and gunnery
P38= Nothing and I mean nothing can manipulate the "verticle" fight like this jewel
KI84= what can I say, keep this plane inside your opponents "personal space" and it is almost unbeatable
F6= learn to be comfortable with the lack of views and this plane is a true monster
Mossy= Not familiar with this ride enough but I've seen Grizz, Bat and Kappa reverse it so fast it will boggle the mind
NJUG= this truely is a diamond in the rough, get past the poor acceleration and manage flaps well and this beasty is a true predator
There's a few others but my point is a NOOB will never do well in these rides. But an experienced player with these rides will pwn experienced players in comparable "easy rides". These rides actually have more options and tools at there disposal than "1-2 trick" easy rides IMHO
JUGgler
I disagree.
Some of the planes you mentioned are good for a noob, some of the other that you mentioned are not good for anyone (sure they might be enjoyable to fly but you wont be the best in them).
F4U: Good guns and good turn rate for any noob to use, if they drop flaps that turn rate increases. You don't need to know how many notches of flaps to drop, just drop what you feel is needed to turn with the enemy, yes you might burn up your energy but a noob does not need to be an expert in this plane. Also compared to a lot of other planes it has air breaks which help out a lot. I'd recommend this plane to a lot of noobs.
K4: Great for running, any noob would love that. Guns will be a problem, but since most noobs can't hit anything anyways it's not that bad.
P-38: It might be good in the vertical, but the only person who ever gave me trouble in that plane was ack-ack, so excluding him no matter how good you know this plane you will be at a disadvantage.
Ki-84: I think a noob will do well in the Ki84, it's a Japanese build Spitfire.
F6F: Visibility wont be a problem for a noob because their SA sucks anyways. But it does turn good, has good guns, and is capable of taking a lot of fire.
Mossy: It can be flown well with a good pilot, but just like the 38 I have yet to see anyone give me a hard time in it.
NJUG: Same thing, don't remember anyone giving me trouble in it.