Another discreet option is an ankle carry trauma kit. Atlas Gen4 Achilles. You know you’re wearing it but it’s comfortable and totally unnoticeable to the untrained eye. No relation, just a customer. Their gear is quality. Phokus also makes the Advanced Low Visibility First Responder Kit. Finally, check out the Clutch Belt Pricey but it would carry all of the gear you mentioned as well as a Trauma Kit.