Look at Grist.

You maybe justly concerned for it being an open source project that is backed by one small company that sells hosted plans.

The difference is that Grist is a core part of the French Government’s open source web applications La Suite

https://www.getgrist.com/

https://lasuite.numerique.gouv.fr/produits/grist

Second Grist it is very cool we use a lot of it. You can run python as a column/ cell and it doesn't have a lot of the limitations of Airtable. Usage tiers are ridiculously large. Free api. I am almost hoping they charge more so they stay in business.