Apple Pro Display XDR has a pixel density of:
215.70

A.K.A. A1999
Released: 2019

Resolution: 6016×3384 32″ display

Totaling 20.36mp (megapixels) and having a PPI of 215.70

Category: Desktop LCD
Tags: tft, ips, flossy, vesa, 6k

Pro Display XDR

Pro Display XDR with Pro Stand
Developer	Apple Inc.
Type	Computer monitor
Release date	December 10, 2019; 2 years ago (2019-12-10)
Predecessor	Apple Thunderbolt Display
Related	Apple Studio Display
Website	Official website

This righthand infobox courtesy of Wikipedia.