Fantastic job, CMDR Leif_Erikson! You are the Marco Polo of the Galaxy! 
I think it's no secret that systems with the remains of stars (not the second star) can't have earth-like planets. As well as in systems with young stars and intermediate links between stars and gas giants. In the first case, when the gas shell explodes/is released, the stellar wind will simply tear off any atmosphere and sterilize the planets of the near environment to a bare rock. In the second case, the heat and light of a brown dwarf of any known type will not be enough to form and support life at a level above plankton.
So why are you looking for earth-like ones where they shouldn't be? To send a report to Fdev for correction?
And some Astrophysics believe it could be found- see link here- Earth Like planets Orbiting White Dwarf
And they can be found in game. Only Wolf Rayets, O stars and Y brown dwarfs have no reports of an ELW in orbit.
When you find it, you could always make it entry #1 on a new list....just sayin'And I'm running out of time to find one to put on Marx's ELW list.
Those are some crazy stats, CMDR!Next part of my destination- to search around the Galactic Circle and have arrived at first destination, an O Star at Hypoe Pruae FG-Y G1663. One of four I have used as markers.
View attachment 181459
At least heading towards the core has increased the density and so far have scanned 15,102 WD systems on tour. Just wish there more to show after heading from Jaques but only noticeable finds are two WWs and one terra HMC.
Almost five months searching am beginning to worry I'm gonna draw a blank finding an ELW but that's the drawback of searching for the very rare. I sill have six months of 3306 to check and hope.
But I can't say I'm not trying. Checked on EDSM to see how many WD systems I had uploaded and for DC's there are 83,083 systems on there and I have first discovered 8,994 at this point which means 9.2% of all DC's are from me! The same sort of figures apply to the other types except DBZ and DBV where I have 17% and 16% of those- almost one in 5
And I'm running out of time to find one to put on Marx's ELW list.
When you find it, you could always make it entry #1 on a new list....just sayin'