Landing Pages in MailChimp VS Upscribe

Your example is actually the only time I've ever seen this side-by-side-style login page with the form on the right. Mailchimp, Quickbooks, and Alliant CU, for example, use the same layout as OP. I'd guess that Rippling is really trying to push their marketing, which is why it's on the left. Source: almost 3 years ago

And, of course, you need a Mailchimp account. If you still haven’t had an account, create a new one here. - Source: dev.to / about 3 years ago

Heroku - Backend server hosting - $7 Cron To Go - Heroku add on for cron jobs - $9 Approximated - Handle unlimited custom domains - $20 Vercel - Indivisual site hosting - $20 Rewardful - Affiliate program - $30 Digtial Ocean - Spaces for some image hosting - $5 Upscribe - Email marketing and drip campaign - $9 Splitbee - App Analytics and email automation - $32 GSuite - Two email accounts - $13. Source: almost 3 years ago

You can even use custom embeds! Notion includes multiple of these by default such as Google Maps, Typeforms, or tweets. Embeds make just about any custom html possible. I used this upscribe embed form below to handle early access sign ups for the service. Source: about 3 years ago