A list of some good pos1 ninjas right now:

Angel of God Konan (around 20k)

Edo Hiruzen (around 20k)

Jonin Minato (with bond mystery) (around 10-12k)

(Six Paths) Naruto (around 20k)

(Rinne Sharingan) Sasuke (around 20k)

Edo Deidera (around 16k)

Kushina (Habanero) (around 10-12k)

Shisui (his price changes drastically depending on the event, but c*so get for 200 if you're lucky in rng events)

Water main is also good with shark bombing but you will need a ninja that cancels all buffs as pos2 to make it work at its best. I might have missed some but those are the ones that generally come to mind in this meta