While latex tubes can be finicky, OP's failures seem consistent enough to point to a rim or rim tape issue, or a pumping behavior issue, and not a tube quality issue.
I've patched latex tubes with success, so perhaps that's a solution. I've also had inexplicable failures as well, following very careful install practices. The most interesting failure I've noted is the latex creeping out of cuts or porous sidewalls and popping. I've now gone to TPU on my fast bikes, and regular butyl on my other bikes.