As a teacher I'm in a luxurious position of having a class TA and. 1-1 for a specific child.
However within our class community there is very little difference between them.
They both hear readers of all abilities. They both work with groups of children (the 1-1 obviously has her child in her group).
They both tell me things they've noticed about how children have come in in the morning if they think I missed it.
They both do break/lunch duties
They both run small groups in the afternoons (again the 1-1 focuses on her child but others can benefit from similar work).
The 1-1 also recognises the need for a bit of independence. That it's exhausting having an adult with you all day making sure you listen and complete the work. If you think of a child who doesn't work with a 1-1 they will have little chats while doing their learning about other things. A child with an adult next to them doesn't get that brain break.
If not left to do some things Independently, they will never develop that skill.
Both my TA and 1-1 have stepped in and done whole class teaching across our whole year group (we have 4 classes) when the teacher hasn't been able to.
They are a godsend and not paid nearly enough for everything they do.
I would feel mortified if they were excluded in this situation.