NMZ inconsistency

I just started playing Nightmare Zone this week.

Yesterday I did my first custom hard rumble with the following bosses: Count Draynor, Witchs Experiment, Me, Nazastarool, Skeletal Hellhound, Tree Spirit, Dad, Khazard Warlordn, Black Titan, Bouncer, Chronozon, Black Demon.

Today, i decided to go again with a few tiny changes to my boss lineup... I removed Witch's expirement, and added the 3 Dream Mentor bosses. This run, the points per boss kill seem ALOT fewer: The Inadequacy ia giving me a fat 7000 points per kill, but everything else seems between 700-1500 points? Additionally, all the bosses arent even spawning?? Ive been in a session for about an hour and yet to see Chronozon or Dad, which are both pretty significant point gainers.

The NMZ is confusing enough and I'm just trying to figure out whats going on. Any input is appreciated.