Albert Fish probably would've palled around with the older gents -
"It was about this time that Fish began to indulge in self-harm. He would embed needles into his groin and abdomen.[11] After his arrest, X-rays revealed that Fish had at least 29 needles lodged in his pelvic region.[11] He also hit himself repeatedly with a nail-studded paddle and inserted wool doused with lighter fluid into his anus and set it alight.[16] While he was never thought to have physically attacked or abused his children, he did encourage them and their friends to paddle his buttocks with the same nail-studded paddle he used to abuse himself. He soon developed a growing obsession with cannibalism, often preparing himself a dinner consisting solely of raw meat and sometimes serving it to his children. ".

.
And although not widely known, Fredrick Cowan would've probably found a few fast friends, lol -

.
On Valentine's Day, February 14, 1977, Frederick William Cowan, weightlifter, disgruntled employee, Nazi lover, anti semite, and racist, shot 10 people, including policemen at the Neptune Worldwide Moving Company in New Rochelle, NY -
https://news.google.com/newspapers?nid=1915&dat=19770215&id=FSEiAAAAIBAJ&sjid=vHMFAAAAIBAJ&pg=3459,2119986&hl=en .