Interesting question. A chart still has the parental axis, so could it show the adopted parents? Or caregivers, which house would describe a caregiver?
Originally the mother was the 3rd place which is the place of the Moon goddess and the place of joy for Moon and the 9th place which is the place of God and where Sun joys representing the father.
Because of transmission errors and bad translations of texts it got shifted to the 4th/10th place axis.
For adopted parents you'd look at the 2nd/8th place axis.
There's no astrology here. This thread is nothing but coincidence. Pluto does whatever it does every day and Millions of people do not die.
The whole thing about Pluto is based on a lie. The false claim is Pluto entered Cancer in 1914 and it caused the Great War aka WW I and then this entire mystique of Pluto being the harbinger of death and destruction yada yada yada was concocted around that lie and rammed down people's throats.
Pluto entered Cancer in 1912, not 1914.
If you go back to the previous Pluto Cancer Ingress in 1668 you got nothing but peace. There were no wars. The only thing that happened was two wars ended in 1667 and their treaties were signed in 1668 and then a war ended in 1666, the treaty was signed in 1667 and it went into effect in 1668.
In the Pluto Cancer Ingress prior to that around 1424 there's an on-going war between England and France so Pluto couldn't have caused it and there were two minor insignificant battles.
None of the Pluto Cancer Ingresses prior to that have anything to do with war, death and destruction.
Of course, traditional astrologers already knew that because Cancer is not the sign for war, death and destruction. The violent signs are Aries, Libra, Scorpio, Capricorn and Aquarius. The human signs are Gemini, Virgo, Libra, Sagittarius and Aquarius. Those two signs have to be configured in some way for there to be violence, conflict or war or to portend a violent death which doesn't mean murder, although it could but it could also mean a traffic accident.