BBR isn't nessary for the pattern, I don't think your understanding what I'm trying to say. It maybe popular to use that for a richer, more clearer color patterns for creating crele, but not everybody has a black breasted red to use, as I don't. Crele is crele, no matter "True" or not. It's just a color pattern.Crele has nothing to do with OEGB per say. Crele is just a pattern it can be on any bird that has the right genes. Breed is irrelevant.
True crele is barred red duckwing which BBR are red duckwing.
Duckwing is the key to crele along with barring.
Gold duckwing with barring is golden crele. Silver duckwing with barring is silver crele, etc. etc.
There are some breeds that use barring on partridge. Although they are not "true" crele some have excepted them as since partridge and duckwing are very similar. Almost exact with the males.
Both e locus are the chipmunk striped chicks which is what they have to be to be crele.
None of the breeds in your crosses carry duckwing or partridge which is why they are not crele or will ever produce crele without bringing in another breed.
Genes make the pattern and without the genes it simply isn't correct for the pattern.