Early works such as this piece which show Klimt the draftsman (before he became Klimt as we know him). Klimt certainly had ability as one would expect when they'd been educated through the academy tradition;
Working drawings for his paintings which are the rough sketches for the larger works where he is working out basic compositional problems for his canvasses. these show some of the basic characteristics of the paintings, but are extremely rough works similar to "mud maps".
But as to finding Klimt drawings that look like "Klimt"...
Burn brightly, Pete.