I haven't used Clerky, but I've been VERY impressed with Stripe Atlas. They handled everything from formation to issuing shares, obtaining an EIN, and even setting up a bank account.

My only minor gripes are I wish they offered more options for banking and registered agent services.

Banking: SVB is the only bank option, which has a $25/mo. fee until your balance is over a certain limit. Other options like Mercury would be good. Though, if I recall correctly, the bank setup is optional, so you can skip it and pick your own bank after formation.

Registered agent: The service they use was $100/yr (first year free). But after some research, I ended up switching to virtualpostmail.com, which gives you a virtual business address (which we needed anyway since we're fully remote) and includes free registered agent services.

Those are relatively minor issues though, I highly recommend Stripe Atlas. And it works well regardless of whether or not you use Stripe. They also include credits/discounts for various services.

I discovered Stripe Atlas through YC's startupschool.org (which is excellent). They had a 50% discount on Stripe Atlas (and other things) when you went through the program.

I used Stripe Atlas in mid-2020, so not sure what has changed since then.