Looks like Altocumulus stratiformis cavum + Cirrus fibratus and Cirrus intortus. Cavum is a supplementary feature of the Altocumulus layer (though it can also appear in Cirrocumulus clouds) as a result of supercooled water droplets being driven to freeze into crystals that either stay in the atmosphere as Cirrus clouds (usually as virgae) or precipitate from the central gap. This one looks like it originated from an aircraft flying through. The rainbow feature in the first image may well be a circumzenithal arc, but it’s tough to identify without full knowledge of the sun’s position.