I'm so sorry about your loss...
Your boy looked a LOT like one of my past boys (Sam) - and actually, I remember trying to do the same thing after Sams died at nearly 14. The reason why I found this forum way back then (even before I became a member) it was my googling Sam's breeder and finding that other people were trying to find her.
She vanished into the woodwork - which left me looking into both sides of the pedigree trying to draw a line to dogs being bred.
In Sam's case - the mom was a Kiowa bred girl and the dad was an Asterling boy... which mean that he was a pretty unique combination. That uniqueness that was him also meant that it was downright impossible finding any prospective puppies who had similar combos behind them or had the same look.
Kiowa was still breeding - but different looking dogs....
We ended up going a different track. I got a puppy who was vaguely related to my other dog, and the 2 boys since then have similar lines to him... and different lines.
I'm rambling here.
My point though is what made your beautiful boy so special and perfect.... might have been a very unique gift at the time.
He had a rather obscure/family bred pedigree - and along those lines, you are not going to find a lot of consistency sometimes. And clearances are likewise prone to be missing...
Even that European style golden mentioned above is not really a great route to go. Are they breeding the same line of dogs you knew and love? No. Clearly not.
As well, their website reflects many of the breeding philosophies and jargon that you find for many really not great fad breeders.
The best I can suggest is cast a wider net.
Look into good decent breeders in your area who are doing clearances and put a lot of care into what they breed. Doesn't have to be show breeders or field breeders or whatnot. But if you are paying any dollar amount for a pup - they should have full clearances behind them. That is the very least that a breeder should do.
With us - I have never seen a dog who looks anything like Sam did. He had many faults - while he was a really lovely dog. Many breeders today are focusing on breeding dogs whose strong points are the opposite of what his faults were. But his little attitudes? Or things that I just loved about him? I do find those things in my current dogs. It's enough to heal the sore spots.