A newcomer and the only woman so far picked for the Cabinet slot is Aileen Kajuju for Education, Youth, Sports, Culture and Social Services docket.
Isiolo, like Lamu, both with 10 electoral wards, are required to pick seven CECs unlike the rest of the counties which have 10 slots.
Guyo is yet to pick a nominee for the Health docket.
He will be required by law to pick a second woman as CEC to meet the one-third gender rule.
Isiolo Knut branch executive secretary was named as County Secretary and Head of County Public Service and Hashim Daud as County Attorney.
Abdi Nyabure, who also served under Kuti, will hold the new position of Chief Executive Officer while Abdi Wario, who unsuccessfully vied for Isiolo North seat, was picked as an advisor for inter-governmental affairs.
Doyo Gollo Boru was named as an advisor for inter-county and national coordination and Abdi Haji Daud as economic advisor.