Best practice: A-class product launch campaign in 2022?

I'm looking for best practices in building a launch campaign for a new b2c saas product.

Things like Clubhouse' invite-only strategy that were very successful in distribution.

Can you share anything or any links you have in mind? I'm happy to make a sheet/collection with everything. Here also a good one I found Collection of other examples https://growthmodels.co/growth-studies/