[robscallsign]

I'm curious if anyone has a similar image of the shoreline of the west coast of Alaska, British Columbia, Washington state, etc.

[dredmorbius]

Try searching for "last glacial maximum" and keywords such as "coastline" "sea level", etc.

This is a collection of plausible renderings:

https://pammack.sites.clemson.edu/lec392/earley2.html

Channel Islands off the coast of present-day Santa Barbara, CA.

https://www.researchgate.net/figure/The-northern-Channel-Isl...