I wish creaks on bike were always that simple, the one on my Verenti has been bugging me most of the summer and I've still not totally cured it, it normally occurs when leaning hard into my stroke.

New bottom bracket, shell faced, checked and tightened every fastening on the bike, twice, removed chainrings cleaned them and put them on tight, tried different pedals and shoes, tried new cleats, removed saddle and post lubed and retightened, checked mudguards, checked frame, forks and handle bars for damage or cracks, and all I've done is reduced the noise a bit, I'm now waiting for something to fail.