Does this type of "hook/latch" exist?

Can you think about turning it 90 degrees and using more like a hanger? If so it's a "rail hanger":

e.g.

Tim.

Thanks, Tim! Looks near perfect. Any idea of the dimensions? ...Jim Thompson

M...

It's for hanging trolley rail (e.g. for barn doors) and the rail is likely way bigger (1.75" x 2.25") than what you need.

But better to overbuild than underbuild. e.g. Tiny Stonehenge in Spinal Tap:

Tim.

A rare-earth magnet might be useful?

Magnetic is also in consideration. ...Jim Thompson

It looks sort of like a fence gate latch. But it'll probably be easier to make one out of an L bracket, than to find one.

|| || || ||_____O_

You're reading my mind. As I chew on this (obviously) honey-do project I came up with:

|| || || ___B___ || ---O--- Movable Plate ||______L___ '-------T--- Bracket ...Jim Thompson

=A0 =A0 ...Jim Thompson

Try these guys:

I suppose the part you want is plastic and the bar stock is metal?

Yes, it exist but I wont bother to do your leg work for you since i am most likely wasting my breathe.

Jamie.

exists, won't, I, breath.

English not your first language?

Further reduction in complexity...

... solves SWMBO's need for neatness in her pantry ;-) ...Jim Thompson