I have been using https://scoria.info/. It is privacy first and offers great flexibility with how you can filter, view, and export your location data.

Importing existing Google timeline data would be useful, but doesn't look like it's supported.

The Neurally Controlled Animat: Biological Brains Acting with Simulated Bodies (2001)

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2440704/