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There may be some more recent discoveries but I know of only two. One is Kepler 1648, a Delta Scuti Star, and the other is V0391 Peg, an SDBV star. I think you can search NASA Exoplanet archive by discovery method.
Timing of observations is critical. PJMO (https://www.centexastronomy.org/) participated in a number of observing sessions of white dwarf stars (Hot DAV stars) that were potential candidates for pulsation timing detection of variable stars, GD 66 among them In the beginning we use the backup Argos Camera from McDonald observatory. More recently we made similar observations using a ProEM camera on loan from UT. Both the Argos and the ProEM cameras cameras are Princeton Instruments full frame transfer cameras that don't require a shutter. The cameras werte directly triggered by GPS signal exactly on an even second time count. The Camera computer was kept synchronized using NTP synchronization timing application (Meinberg has such an application) but even if the computer drifted slightly and the time stamp was off by af few milliseconds, we knew the camera was triggered "exactly" on the second (at least within a few microseconds of electronics delay in the camera). Timing is crucial because the amplitude of the pulsation time variation could be a fraction of a second. The full frame transfer camera avoids and shutter delay and the associated variation in shutter delays. You may be able to accomplish close to that timing accuracy with a CMOS camera if there is one that accepts external trigger signals. Signal to noise is important in many kinds of photometry and it is equally important here so that you can locate Maxima and minima but extremely accurate determination of image times is also important. The method we used provided timing accuracy to the sub-millisecond level.
At one time it was suspected that hot DAV white dwarf star GD 66 had a planet. That now seems unlikely as mentioned here: https://en.wikipedia.org/wiki/GD_66 .
Gabriel,
There may be some more recent discoveries but I know of only two. One is Kepler 1648, a Delta Scuti Star, and the other is V0391 Peg, an SDBV star. I think you can search NASA Exoplanet archive by discovery method.
Timing of observations is critical. PJMO (https://www.centexastronomy.org/) participated in a number of observing sessions of white dwarf stars (Hot DAV stars) that were potential candidates for pulsation timing detection of variable stars, GD 66 among them In the beginning we use the backup Argos Camera from McDonald observatory. More recently we made similar observations using a ProEM camera on loan from UT. Both the Argos and the ProEM cameras cameras are Princeton Instruments full frame transfer cameras that don't require a shutter. The cameras werte directly triggered by GPS signal exactly on an even second time count. The Camera computer was kept synchronized using NTP synchronization timing application (Meinberg has such an application) but even if the computer drifted slightly and the time stamp was off by af few milliseconds, we knew the camera was triggered "exactly" on the second (at least within a few microseconds of electronics delay in the camera). Timing is crucial because the amplitude of the pulsation time variation could be a fraction of a second. The full frame transfer camera avoids and shutter delay and the associated variation in shutter delays. You may be able to accomplish close to that timing accuracy with a CMOS camera if there is one that accepts external trigger signals. Signal to noise is important in many kinds of photometry and it is equally important here so that you can locate Maxima and minima but extremely accurate determination of image times is also important. The method we used provided timing accuracy to the sub-millisecond level.
I was going to attach a paper by J. J. Hermes on using pulsation timing for exoplanet discovery but I don't see the normal buttons to attach files. So here is the URL:
https://www.aavso.org/sites/default/files/Timing%20by%20Stellar%20Puslation%20Exoplanet%20Discovery_arXiv1708.00896.pdf .
Also the Planetary Society has a very informative article on using several different kinds of timing variations in planetary discoveries here:
https://www.planetary.org/articles/timing-variations.
At one time it was suspected that hot DAV white dwarf star GD 66 had a planet. That now seems unlikely as mentioned here: https://en.wikipedia.org/wiki/GD_66 .
Hope this helps