Hi Darren, this is a Cold Spring font named Runestone (the font Mythica was based on this font, though they gave no credit to the original). They regularly use it on their mausoleums. The font dates back to around the early 1960s and I believe was originally designed by someone at Royal Melrose.
For Morton’s second date, someone used a very poor-quality version of the Government font, which has been floating around the industry for quite a while.
You can reach out to Cold Spring for help matching it, or if you’d like you can also use the MLC Inscription Matching Serice: https://www.monumentletteringcenter.com/product/cemetery-inscription-matching-service/