My two last position were in team where all members have a technical background. Like, we just assume you can code or query whatever. Devs are not magical creature. Coding happen to be their main focus.

- A bunch of devs. - A BA exactly like you described. Usually 50% on one team. - QA lead, able to pull from the set of devs at will. Must have deep automation and QA skills. - A scrum person ( 20% on the team ) - a tech lead.