GP will work with all well coded plugins.
From user Feedback:
Gravity forms is the most powerful and extensible – if you need advanced settings and conditions.
For more standard needs a lot of users go for Ninja Forms or WPForms.
So i guess the article mentioning e.g. prime from site library using contact form 7 is outdated then.
i am currently trying out contact form 7 and gutenblock forms (https://wordpress.org/plugins/forms-gutenberg/) – which i found by accident (due to its name it doesnt really show up when you search for form plugins/block and looks really promising. The other contact forms available as block (coblocks, jetpack, getwid) – are rather rudimentary (name, email, message) – but gutenblock forms is more specialised. So after a little testing a viable alternative – and also open source.