To be fair, we don’t have any pics of exoplanets. Technically, we could measure their surface temperature and basic chemistry through spectroscoopy but I don’t think they reflect enough photons for our equipment. They are usually identified by dimming their star slightly when passing in front of it. This can give an estimated size and distance from their star. And maybe atmosphere composition if it refracts! So they’re not naming this kind of picture but a bunch of data with big error bars.