I LOVE Dopt. I've been using it for mission critical onboarding steps to guide musicians on my platform through the syncing of social and streaming platforms. Dopt allows me to track the progress of each of user, prompt them to complete the next steps, and surface errors when something fails. I haven't used the pre-built components yet but am itching to do so!
Airtable is really interesting for views, groupings, sorts, and possible filters. It also has a powerful and well-documented API. It's a good low-code tool for bootstrapping project ideas.
We built our own onboarding tours last year because the no-code tools didn’t give us enough flexibility to build what we wanted to, but it ended up being way more work than we expected. Excited to check this out!