eSabthok We don't support any additional ad formats other than Ezoic placeholders, however, we do allow for additional networks on your site to compete with Ezoic. You have this feature, mediation, already set up. This means that Ezoic competes with AdSense on your ad space, and the additional demand raises your programmatic bid floor.
We then allow you to collect the highest price bid, whether it be from our partners or AdSense. The ad that bid the highest amount is the one that will show. This option works best if your traffic is set to 100% Ezoic, because you will want competition on all of your ad space. Without it (only having Ezoic, or only having Adsense) the minimum bid price goes down, and you may lose out on higher bids.
So, in regards to your infeed question, we do not support infeed ads, however, you can add in placeholders in those positions and Adsense will automatically compete with Ezoic for those spots. If they win, they will be displayed. This feature also works on native ads.