I also have this problem, and while I have not been able to get my hands on anything by Reiter, I must respectfully disagree with most of the suggestions herewith.
Alden lasts typically have a more generous heel relative to the toe box. That is how they are designed, and on Tru-Balance and Barrie, for example, folks in our situation will find your toe will distorting the box while the heel slips. Not a good option.
C&J must remain the shoe equivalent of that pretty girl on whom you had a massive crush in 8th grade--the one dating the guy on the high school varsity team (remember her?). You can only look and wish things were different. They weren't then and aren't now. There is no version of the 341 your toes will not distort. The 325 is a cruel mirage. 325 models available in G fittings are made on the 317 last, but you will find that this last is substantially wider in the heel and instep and almost identical to the 325 in the toe. Don't bother. She's not available to us. :-)
I have had good luck with the Church's 103 last in G fitting, which comes standard in exactly ONE model, which is the Shannon. I own several pairs, and not because I particularly love plain-toed bluchers. The Burwood in the 81 last, G fitting, can also work but the toe is slightly narrower, and you RTW options are limited to binder leather, which is not everyone's cup of tea. Church's and Leffot, NY, will make them in any leather option, however.
The Tricker's 4444 last in standard 5 fitting is okay, and Tricker's can be made to your specifications without much fuss from The Shoehealer, but they aren't cheap.
What you CAN do with the AE 1 and 7 lasts (I wouldn't even bother with the 5 last) is take a piece of cork board or a yoga mat and cut a large triangular piece, to be inserted somewhat like a tongue pad across your instep. Cut it so that it bends around the top of your foot.
If anyone has purchased a shoe that works for feet like ours, I am all ears!