The first two links are different outlets reporting on the exact same study, which talks about a nationwide increase in death rates, not just California, and both have this quote from the study author early in the article:

Some of the increase in the mortality rate may be attributable to county death records keeping better track of who is homeless, Fowle said. Other than that, he and his team aren’t sure what else is behind the rising death rates — more research is needed, he said.

The third link is entirely about efforts to have better reporting, in order to figure out what policies might help. It has no policy recommendations or criticisms of current policy.

The fourth and fifth links are about suicide rates among transgender people nationally, not specific to California.

I am not tracking how any of these reflect on specific policies advocated for by Newsom.