Format calculated column as hyperlink to navigate like the Name column

drmrbrewer I am not sure if you can make it visible on hover similar to default Name column but you can use below JSON which will show (...) next to column value always and open the context menu on click of the icon: 

{
  "$schema": "https://developer.microsoft.com/json-schemas/sp/v2/column-formatting.schema.json",
  "elmType": "div",
  "children": [
    {
      "elmType": "div",
      "txtContent": "@currentField",
      "attributes": {
        "class": "ms-Link"
      },
      "customRowAction": {
        "action": "defaultClick"
      }
    },
    {
      "elmType": "span",
      "style": {
        "margin-left": "15px",
        "font-size": "16px",
        "cursor": "pointer"
      },
      "attributes": {
        "iconName": "More"
      },
      "customRowAction": {
        "action": "openContextMenu"
      }
    }
  ]
}

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