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.