I think it is possible to do with Meta Box. The repeater feature of ACF is the cloneable setting which is supported for all field types of Meta Box. Refer to the documentation https://docs.metabox.io/cloning-fields/
True, understood I may have misused the technical verbiage but that's what I meant. So if I enable the cloneable option on a text field then Oxygen doesn't see it as an option to retrieve within the builder. I can only see it if it's inside a group. Does that make sense?