Plants/grasses that detoxify contaminated soil?

Hi all, new to this community and was affected by fires in the LA area. Thinking in the long term about what the impact of toxic ash that tests have shown have dangerous levels of lead/arsenic/other toxins on the soil.

I remember hearing a story about sunflowers being planted in a contaminated area to detoxify the soil and I’m wondering if something like that would be a good idea, especially as someone who plans to start a garden soon.

Does anyone have knowledge in this area? Are there plants that are specially effective for drawing out heavy metals, for example? Any native plants to Southern California that would be useful for this?

Thanks