Thanks @SarahSaint-Ruth , for the info provided at the below location. A follow up question below.
https://community.esri.com/t5/arcgis-field-maps-blog/what-s-new-in-arcgis-field-maps-november-2022/ba-p/1230573
You mention in your response that, paraphrasing, in Field Maps Designer (FMD) you can 'create new layers for the field'. Do you mean that a new data layer for an online map can be created completely in FMD without first creating a new shapefile or geodatabase with schema and attributes created by traditional desktop ArcGIS or ArcPro followed by publishing to a feature service?
I will watch the webinar and other documentation you linked to previously and this may be answered there, but my first thought before going there was my above question.
Thanks again.