Mostly CRUD-type data collection - or essentially what would be "Pages" in tools like SharePoint, a landing location with linked resources, text, etc.

"BA's" had been building them for years before we arrived.

We categorized them into complexity buckets: Level 1 - simple CRUD, no "business logic" - we could convert those during a quick demo, 20m. Level 2 - slightly complex, including "@Formulas" - each would take about an hour to convert/migrate with some minimal manual intervention. Level 3 - even more complex - minor analysis/review. Level 4 - complex, detailed requirements and review needed.

Initially the first rough estimate without our "conversion/migration framework" was about 10-years (1-person) to rebuild them all.

After our tooling came live, we were able to complete in about 6-months with a team of 4 people.

Of course - a few short years later - truly starting at about release of SharePoint 2010 - Microsoft was evangelizing it's own "low-code/no-code" capabilities for users to dig themselves into the same situation. (SharePoint Designer Workflows, InfoPath, "smart/connected" Documents, data-driven Visio diagrams, "easy" customization of Sites/Pages via JavaScript/CSS/HTML, etc.)