I have Security+, CSA+ and am studying for Cisco CCNA Cybersecurity
Its a shame that 'competing' certs don't really offer much credit between them for the same knowledge
Where should I start in the ISC world ?
SSCP would be the starting point in the ISC world, there is a nice post on recommended study material (link below). With your existing certifications and real world experience you should not have a problem passing after studying.
Thanks so much for the guidance !