patterns-openSUSE-devel_***** packages

I might like to try some development.
In Yast->software management->view->patterns, I see some Meta package for pattern devel_*****
What are those meta packages? Are they what I need to install to start development work? e.g.
install 1st patterns-openSUSE-devel_basis,
then e.g. patterns-openSUSE-devel_ruby, if I like to try some ruby?

Am confused what to install with so many packages per category under View->patterns. Thanks.