Just for context for the public.
In trying to understand no self, it can be confusing for beginners. There tends to be an implicit mapping of self to many things, including the 5 aggregates, that there’s different persons which are named differently, have different bodies, or at least different head.
No self means ultimately, a self is a fictional thing, a concept we created in our mind to make sense of the world.
Conventionally it is useful to use self to refer to the 5 aggregates.
Ultimately (Theravada Abdhidhamma usage of ultimate, not mahāyāna usage), there’s just the 5 aggregates, broken down to 28 forms and 89 or 121 cittas and 52 cetasikas. They are all not self. Ultimate language used in Theravada Abhidhamma is supposed to be freed from concepts, so these are to be directly seen/known in deep meditation. Without using concepts, it’s hard to speak in daily life to refer to this 5 aggregates or that 5 aggregates instead of I or you.
But there’s still a possibility to distinguish this or that. This body is not the same as that body. That mind got enlightened doesn’t mean this mind got enlightened. That 5 aggregates produced wholesome kamma, which that 5 aggregates, linked by change and continuity also continue to reap, not other 5 aggregates.
The above is already painting the picture using no concept of self as it’s in Abhidhammic ultimate language.
Thus no self doesn’t deny this property of individual. Which is separation of the 5 aggregates, in terms of how kamma functions and in terms of how liberation is attained, each person for themselves.
Bring in past life recall, as far as the scriptures go, there’s no such thing as person A and B recall they were both person C in a past life. Each person has their own unique past life chains. And that past life chain is another way we can put the label of individual there, as having the characteristics of not mixing.
It’s not the same as lego blocks, I can create 10 houses with 10,000 lego blocks, but then destory them all (death) and rebuilt another 10 houses, with the same blocks, but each houses have different blocks than previous ones.
In terms of physical atoms, of course that can be a good analogy to describe that atoms are impersonal and goes all around.
In terms of kamma, ignorance, 5 faculties, attainment levels, memories, etc these follow strictly one individual and are bundled together. Or one can say the individual is defined by these things which passes from one life to another. No such thing as oh the attainment level of stream winning of Alice is swapped with Bob’s kamma, and then suddenly that Alice inherent Bob’s actions and her attainment, and her actions goes to Bob. Her past memories goes to Charlie, etc.
In this manner, individuality property can be discerned directly from how rebirth works.
None of these are self because they are not permanent entities.
Whether this is the same as Puggalavāda, I leave it to experts who have studied that school to judge.