Times Roman (not the one with New, Linotype version 15.0d2e1) disappeared on macOS Monterey

I am using a MacBook Pro (mid-2020, Intel with 4 Thunderbolt ports) on macOS Monterey.

I went into Font Book and found that Times Roman, the PostScript typeface, disappeared from the list of fonts, and outputting the font list from Terminal also yields the same result.

1. Why Apple has removed the typeface, and is there a method to restore it?
2. Will more typefaces be removed from later releases of macOS? Especially Helvetica and Lucida Sans Grande, they are important typefaces all the time.

I personally refrain from using the Monotype version of Times on macOS as they lack proper ligature support, and the glyphs from the Linotype release have a better shape.