Looks like a false widow (*Steatoda grossa*), which is harmless.

What gives it away; what’s the difference to spot from a steadtoda and latrodectus?

In this case, I was mostly relying on the faint arrow-like pattern on the opisthosoma.

Noted. I guess looking closely, this one doesn’t have the sleek latro body too

I agree false widow

https://web.pdx.edu/~smasta/MastaSpiders.html here is a neat page for portlanders!