I extensively use Tab Groups in Safari.
Here are my tab groups for Stimpunks:

I also use Profiles in Safari. I have Personal, Stimpunks, and Cope and Carry profiles.
This allows me to keep log ins separate. For example, I have separate Google accounts for Personal, Stimpunks, and Cope and Carry. I log in to the corresponding one in each Safari Profile. Likewise other accounts.
Combining tab groups plus profiles will make life easier once you get used to it.
Here’s a shot of my tab group switcher.

#flow-share
