I have been struggling to find a better way to do this, I would like to print different messages on all posts based on the category type while excluding the lastest post in each category.

if ( in_category('category-1') ) { 
  echo '<p>This is an older blog post, you will find one on more recent data</p>';
} else if ( in_category('category-2') ) { 
  echo '<p>This is an older blog post, you will find one on more recent data</p>';
}

I hope someone could help me out.