From what I’ve been told by the web team at the company I work at, images get blocked by ad blockers if they match the industry-standard advert sizes for banner

From what I’ve been told by the web team at the company I work at, images get blocked by ad blockers if they match the industry-standard advert sizes for banners etc. We serve our own ads that we sell directly to businesses related to our content, but it’s often done through the customer’s PR agency, who sort out the ads for various different outlets, and are not interested in making different sizes that wouldn’t be blocked just for us.