Of the three games that have been added, probably the biggest arrival is My Time at Portia, the popular farming and role-playing title. Joining it also from the farming side of things is Farmer's Dynasty, though this is more of a simulator.
The complete games list can be seen below, as well as the Origin Access tiers they are available in:
Origin Access Premier
Origin Access Basic and Premier
As should be evident by now, the Origin Access subscription that EA offers is split into two tiers - Basic and Premier. The $4.99 per month Basic subscription boasts over 250 games in its vault, and has other bonuses like a 10% discount on the Origin Store and free trials for upcoming EA games.
Meanwhile, the $14.99 per month Premier variant has all of the benefits and games from the Basic tier, but also adds on unlimited access to all newly released EA games as well as some fresh titles from third-party publishers.