The arcane circle is magical. It appears to be tethered to a Warren unfamiliar. Conjuration is the aura.
A Book of Vile Darkness screams magical. Necromancy is probably the biggest aura.
Nothing to see here seems absolutely undetectable.
The wand is definitely magic. Divination is the aura.
The bedpan is magic.
The cloth wrapped object is magical.
The trunks all have a magical aura around them and various things inside them.
None of these books have been known to you historically except possibly the Book of Vile Darkness.