Well, I've flown neither the F-100 nor the 104. But, I've flown with a
lot of guys who've flown them. My experience was F-105 and F-4.

The F-100 was known for it's adverse yaw--the phenomenon of having the
airplane yaw away from the direction of intended turn when a lot of
aileron/stick is thrown in. Roll hard left and the airplane suddenly
flips over to the right. The issue is that the down aileron creates
much more drag than the up one--i.e. yaw away from the roll direction.
When that happens, suddenly the high wing gets a lot of blanking from
the yawed fuselage and the low wing is placed in a better lift
producing situation and you go the wrong way.

Throw in that the -100A model had no flaps and hence very high landing
speeds and a slow responding, relatively low power engine. That, of
course leads to the potential for the "Sabre Dance" where you get
behind the power curve, extremely nose high and the only way out is to
lose altitude which might not be available.

The F-104 really was only a problem because of high landing and
take-off speeds. (WaltBJ will undoubtedly offer greater insights into
the Zipper at this point.)

The F-105 had very few bad flying characteristics except for the high
wing loading and high TO/Landing speeds.

The "hard wing" F-4 (before leading edge slats were added to E-models)
had very similar adverse yaw characteristics as the F-100, but a lot
better thrust/weight and engine responsiveness. Boundary layer control
(blowing) reduced landing speeds as well.