This list purely based on my opinions and how I receive the manga.
And the list only about first 194 chapter of Dragon Ball Manga. The OG one. I'm not gonna consider what happened during Z or Super. I'll make those lists later when I finished it. And after finishing all canon DB series, I'll try to make a "General List" but till that time I'll go with "specific lists for each DB Series".
Vs Piccolo Jr. version
Piccolo Jr.
Before his Training with Kami, after drinking the elixir.
The First One we encounter.
Piccolo Senior after regaining his youth
Piccolo Senior before regaining his youth
EoS
Vs Goku version (Goku after Kami's training)
EoS
Vs Piccolo Jr. (EoS)
After Training at Korin Tower
Vs Shen (Kami) version (EoS)
Vs Goku version (before wedding)
