More to explore:
Path Sign Up
Dribbble - Sign in to website by Gevi Marotz
txt doesn't matter
Nice subtle pattern in the background.
Lkd.to Landing Page
We could potentially do a slider that switches the input boxes from "user" to "organization". With some sort of nice transition, without leaving the page.
EyeEm Android sign up flows screenshot
30 Examples of Sign-Up Web Forms for Design Inspiration
Light vs Dark by Josh Austin
Login popup: dribbble.com/...