What is the hottest Neptune-sized planet?

Planets of this size are almost missing from the hottest orbits, a gap astronomers call the Neptune desert. The explanation is that a Neptune has enough atmosphere to lose and not enough gravity to keep it: park one close enough to its star and the outer layers boil off into space until only a rocky core remains. The worlds at the top of this table are the survivors, or the ones caught mid-evaporation.

The temperature ranked here is the equilibrium temperature, the balance point a world reaches from starlight alone, before any greenhouse warming. Disputed rows and physically impossible values are excluded. What could unseat this record: transit surveys keep finding the rare ultra-hot Neptunes that the desert should have emptied, and each one is a test of how planets lose their atmospheres.