I have heard only three clarinet concertos. Mozart in A and Weber No 1 & 2. Who knows of more I can listen to and study.

Yeah. But that's no fun. I wanna look up some U recommend. That's the fun. The one's U like, I wanna look up. Ifen U get my drift..... but thank's anyway in the meantime.

And ... interesting ...your zone time and my zone time are translated into US zone time. The actual time here where I am is 19.29

Mozart
Weber in Fm
Weber in Eb
Weber Concertino in Eb
Spohr 1, 2, 3 and 4
Copland
Nielsen
Debussy Rhapsody
C. Stamitz in Bb
Crusell
Arnold 1, 2
Bozza
Corigliano (Near Impossible)
Finzi
Francaix
Hindemith
Piston
Krommer
Tomasi
Tower
John Williams

That is pretty much the Concertos that I would call "standard".

Many thanks. First I will check out the composers I haven't even heard of on your list.

Artie Shaw - 'concerto for clarinet'

Some more Clarinet Concertos I discovered on my "travels" to add to the above lists. I didn't realise there were so many.
Double Bass Clarinet Concerto by Jonathan Russell. ( I like this and his other work with his bass clarinet quintet)
Anders Hillborg
Philip Sparke
Kalevi Aho. (Commissioned by Martin Frost.)
ajdznatz
Eduardo Alonso Crespo
John Mahon
Sándor Veress
Istemihan Taviloglu

Stamitz has a few good ones actually. Also the Finzi, which is difficult but a lot of fun to play. The Concerto by Joan Tower is spectacular.