The Dutch Valk klasse is similar size and original concept to the U.S.A.s Lightning class though with a squat traditional gunter rig. It appears the Dutch build them in fiberglass for recreational sailing - the PolyValken. (I think they reserve the wood ones for racing.) By the looks of this video, the Valk fits the recreational role superbly. (I like the cross thwart at the aft end of the cockpit allowing the skipper to recline and steer at the same time.)
Zeilen op de Kagerplassen from Muxio on Vimeo.
Jolle segeln is German for dinghy sailing. Here is a daysail in a true classic German dinghy, wood with traditional fittings. (Video settings doesnt allow me to embed.) Im not sure what the class is, maybe a reader can help out.