Yes, I know what you mean.
But is it necessary from the Sutta, that King Bimbisara had these 14 jati after attaining the Sotapanna stage?
What if he can remember previous lives before he attained the Sotapanna stage?
He only said he can remember 14 Lifes (jati). Not that he can remember them since he became Sottapanna.
I feel, the Translation by Bhikkhu Sujato does allow for that possibility.