I believe the clips in photo #3 hold the transmission fluid cooler lines that go to the bottom of the radiator.
Part 1 is a bracket for one of the cooler line clips in photo 3, the bracket is attached to one of the front oil pan studs. The right bracket in photo 2 could be the washer fitted between the starter bracket and the oil pan. I dont think the left bracket in photo 2 is a oem part.
Pics have been mostly answered but I will chime in with more detail.
Picture 1: is the bracket mounted to stud at right front corner of oil pan for Trans Cooler lines as seen in Pic 3.
Picture 2 on left: is the strap that attached to RH trunk cardboard wall to hold the jack base in place (see pic below).
Picture 2 on right: is the 1964 Turbo Hydramatic Starter spacer that goes between the starter support bracket and the oil pan.
Picture 3 are the trans color line clamps... one mounts to that bracket in picture 1 on the U nut clip end and the other mounts to a U nut clip attached to the front trans inspection pan that goes in front of the adaptor ring.
Just to add, there is another similar looking clamp use on the rear facing front frame section for the gas line and the brake line but you can always tell it from the trans line clamps since it has a large back section for gas line and smaller front section for the brake line. The trans lines have the same size "humps" since the trans lines are the same diameter.
Thanks Jason! Excellent info and photos!
This is a fun ——education for me of some of the supporting unique hardware on our year Cadillacs and there location on the cars