Question: I use Elementor / Beaver builder / Divi? Can I continue to use it with WordPress FSE?
Answer: Yes maybe. But WordPress core logic may be faster – there’s less to load.
Alex Shaw suggest using GeneratePress and Kadence WP with Kadence Blocks.
His favourite is Oxygen, which replaces all of the theme.
Oxygen is a lifetime licence.
with OxyExtras – load time as good as the Gutenberg block editor.
PostX – Gutenberg Post Blocks
Elementor has a plugin to extend Gutenberg.