Interesting topic, @Numbuh1Nerd!
A while back, I found something that I thought was an Easter Egg, but I couldn’t find a definitive answer on the possible connection.
Adeline Kane (ex-wife of Slade Wilson aka Deathstroke ) has a butler named “Waller”. He is first featured in Deathstroke (The Terminator) #1 and again in Deathstroke (The Terminator) #12 .
It’s interesting that Amanda Waller’s character was created in 1986 and in 1991, the Deathstroke comics decided to introduce another person with the very same last name (presumably unrelated).