The ones at the top have no release date. Scroll down until the games start showing release dates. Note that it's based on North American release date, so a recent Virtual Console release of a previously Japan-exclusive game for example will count as a recent release.
It appears someone has been vandalizing the wiki by adding Genesis to EA sports games that were never released on the Genesis. be on the look out for that.
Actually, it seems the EA games were released as built-in games on some Brazilian Mega Drive hardware. They were the mobile phone versions though. I'm not sure they were actually ported to the Mega Drive.