If you work with GIS in a local government, you usually do not get to try out some of those more interesting map projections. If you deal with world data, then you might get to use them. Like this one, the Rectified Skew Orthomorphic:
With ArcGIS 10.7.1 and ArcGIS Pro 2.4, you have access to 68 unique map projection algorithms and another 30 variations, 98 in total! Check out this story map showing a gallery of the 68 supported map projections, from Aitoff to Winkel Tripel.