You're talking about several things here. The limitation for the DO 24VDC high-side CHARM is 100mA. The limitation for the 24VDC isolated CHARM is 1 A. It all depends on the potential load of the output.
Per the details above, you'd probably want to go with DO 24VDC high-side CHARMs with the interposing relays since typically the load of the relay is <100mA. You could go with 24VDC isolated CHARMS as long as you know the load is going to be below 1A. If this is unknown, high-side CHARMS with relays is the best option.
Sorry, another option is also the DO 24VDC high-side CHARM with a relay output term block (supports up to like 4 A switching current) if they are ok with the relay being the CHARM term block.