found some funky-looking clouds while out on a walk recently :D
So clouds like these can go one of two ways; either they're undulatus, or they're lenticularis with transverse ripples (which isn't *wrong* to call undulatus, too. But specificity y'know?)
In this case, both images are cirrocumulus lenticularis with transverse ripples, and cirrocumulus perlucidus clouds.
Great spotting!













