[kzrdude]

LazyVim is relatively transparent and easy to copy in this sense. AstroNvim should be too, now that they both use lazy.nvim for packages.

[whazor]

Indeed, and AFAIK there is normally little configuration beyond plugin installation. But please correct me if I am wrong.

[kzrdude]

I don't know if I'm contradicting myself but LazyVim has a lot of configuration code in addition, lots of custom keybindings and tweaks to each plugin's config.

But it's transparent in the sense that the lazyvim documentation site reveals how each part is configured.