Leading edge sweep is only a part of the picture...
Actual wing sweep is according to the quarter-chord line. Examples: Flite Streaks and Ringmasters have forward swept wings... (Measure where 1/4 back from the LE is at both root and tip, and connect the line. Since the (fixed-)flaps taper forward, the quarter-chord line on each panel does, too. Much less than the TE sweep, but still forward.)
NA Mustangs had very close to zero sweep wings; the TE sweep forward was about 3 times the LE sweep back.
Tapered planform wings, with straight-line LE and TE, can behave approximately like the aerodynamicists "ideal lift distribution" provided by the proper elliptical planform. ...And are easier to build than a correct ellipse...
Sensitivity to buffeting in turbulence isn't completely a matter of the wing taper and/or sweep. Reynolds Number factors (simply, related to the actual chord lengths, since air molecules don't change size to match them. Smaller chords perform less well than longer chords like those on people-carrying aircraft, even with the same rib airfoil shapes.) I had a model with a nicely tapered planform, that buffeted severely in turbulent wind. I had kept the same airfoil percentage from root to tip. On the next model, I split the difference between the rib max depth the root airfoil % would have at the tip chord length, and the root chord airfoil max depth. It was much less sensitive to turbulence.
And, besides, a tapered wing looks better to me, too.