Recommended best practice for add/remove from a list during onboarding

Trying to understand what the best practices are for setup/onboarding use case like this. We're asking the user to customize their feed of newsletters in this instance; user can remove item from those we automatically added or add a new one from a list we originally filtered out.

Here are two original options. With the first one, there's a hover effect where a checkbox appears (like Gmail bulk actions).

Any help is appreciated!