I would bias towards people who have a concrete position they are advocating for and not just talk about what they are against. Critique is cheap and mostly pointless without a real solution.
I tend to find the best accounts are ones that you disagree with on some things but not everything. Avoid people who still need herd acceptance to survive. So either niche accounts or people with a social moat/fairly uncancelable, this will get you rawer inputs.
DO NOT JUST FOLLOW PEOPLE YOU AGREE WITH. They should either make you think at a deeper level or inspire you. If they just parrot back what you already think then what's the point of reading what they have to say?
@evacide @JohnArnoldFndtn @sama @ShellenbergerMD @balajis @dhh @micsolana
Also find people who break up the monotony with interesting things: @Rainmaker1973 @Mikeachim @simonsarris
Also do not unfollow people just because they believe/do something your tribe says is "unforgivable". When someone asks you to hate a stranger on the internet, just say no.