Notion has a distraction-free signup page where there is not much to do on the page other than signup. You can see that they are not even using any image on their signup page in order to keep it ne ...
The signup flow for Calendly is not straight forward. They do ask to verify emails which sometimes results in a drop of signed-up users. However, email ids are the core for their product and hence ...
Ubersuggest's popup encourages you to sign up showing the benefits in features and a single click login.