https://www.bikelightdatabase.com/best/taillights/

I'd go with one really bright tail light and one cheapo blinkie just to create more disruption in the semi-alert minds of the drivers who might ignore you until they almost hit you---and then blame you.

USB rechargeable is nice, but with modern LI-ion batteries even AAA or AA cells are okay (Not like it used to be) and those can be easily replaced, where as most USB-charged lights are trash in 3-5 years.

I definitely do Not recommend the Blackburn Flea---nice-looking, small, handy, but mine crapped out way too soon.