Unfortunately, at this time there is no way to import a defined style from ArcMap (e.g. .lyr or .xml file). We do have this filed with our development team however, as something to look into implementing.
Adobe released an update to Illustrator 2021 (v25.3) that includes native support for M1 Devices and Rotate Artboard functionality. Please note these features are not yet supported within MAPublisher at this time. See compatibility notes.