If you go to this page - click
you can then access deaths by whatever regiment you want
The "total" of British soldiers who died in Ireland I have is currently click here
killed in action - 177 before the truce and another 16 after the truce. On 21 November 1921 the British army held a memorial service for its dead, of all ranks, of which it counted 162 up to the 1921 Truce and 18 killed afterwards. To an extent it depends how you define KIA in Ireland
killed accidently by firearms - 56 deaths
suicide - 26 deaths
murdered by another soldier - 4 deaths
accidental deaths - 48 deaths from non-firearm related accidents
illness - 99 deaths. Spanish Flu accounted for many of these. This figure is grossly under-recorded as it is impossible to ascertain the number of deaths
The British very very bad at recording deaths. There are a great number of unrecorded bodies still buried in bogs today.
Many of the deaths in Ireland never got to the papers, and the bodies were buried in England. Even if you were to cross check CWGC against Irish GRO you could never get the figures.
I have only recorded deaths in the "army of occupation" - I use that term descriptively, not to wind anyone up. In other words I have excluded Irish who died at home, may have a CWGC grave, but were not stationed in Ireland because of the counter insurgency in War of Independence. The Irish will be the bulk of your 591 CWGC burials.