Hi,
To build this style, I would suggest you to use the Sequence Operator in the Increment at X mode for each row and these wire into another Sequence Operator - this time in the Increment in Y mode. Each Segment can be linked to multiple Material Operators to Replace its Material ID correspondingly and get desired pattern. Attaching a sample scene, please feel free to simplify the Multi/Sub-Object material, as this has been used just for testing purposes and total number of IDs can be lowered. Hope you'll find it useful.
Best regards,