Wasn't running them all, but a couple recent companies had ratios of about 1:4 and 1:2 (employee cost : cloud cost) with cloud spend in the low-to-high hundred Ks annually.
Curiously, the company with the higher cloud bill also had the lower ratio (spending more on both, but proportionally more on engineering); my diagnosis after the fact is that they were building for a "do 10x the scale" future that was never realized but which would've pushed the cloud spend higher without needing more dev spend. In the future, I wouldn't spend so much that far in advance of actually needing to scale.
Curiously, the company with the higher cloud bill also had the lower ratio (spending more on both, but proportionally more on engineering); my diagnosis after the fact is that they were building for a "do 10x the scale" future that was never realized but which would've pushed the cloud spend higher without needing more dev spend. In the future, I wouldn't spend so much that far in advance of actually needing to scale.