If you have intention to be a Sotāpanna Anugāmi (Sotāpanna Anugāmi is a sotāpattiphalasacchikiriyāya paṭipanno which means person practicing for realizing the fruit of entering the Stream) which is equivalent to either Dhammānusārī (dhamma follower) or Saddhānusārī (faith follower), then you have to read and understand the following suttā:
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Patipanna Sutta (SN 48.18) describes the eight types of Noble Persons.
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The eight Noble Persons (Ariyā) are also listed in other suttā too including “Paṭhama Puggala Sutta (AN 8.59)” and in “Puggala Sutta (AN 9.9).”
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An important way of classification of the Noble Persons (Ariyā) relevant to this topic on Dhammānusārī or Saddhānusārī is given in Tatiyasankhita Sutta (SN 48.14).
To know the details of the above suttā, please read this article on “Sotāpanna Anugāmi – No More Births in the Apāyā.”
You may also want to know that there are four conditions for reaching the Sotāpanna magga/phala.