are mounting brackets required for mounting closers with coordinators

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Those holes are for mounting the coordinator mounting bracket itself.  The brackets must be drilled and tapped for the hardware you are mounting to them.
The 62A shoe is used when it is necessary to install the door closer (lower) down on the door so that it will operate under accessories such as overhead stops, coordinators, etc.
When using the 4111 with a bar style coordinator MB-mounting brackets ordered from IVES are required. The brackets wrap around the coordinator to provide a surface for mounting the parallel arm ...
The old 4030 series was: Handed Mounted regular arm hinge side. Had sized springs, were not adjustable. The 4033 is an obsolete closer.  If required, handing can be verified by looking at ...
The 2030 Instructions included with the unit has templates for mounting with standard butt hinges, center pivots, and offset pivots.