The ones that are single/small subset glyph are fine since it’s a few bytes and very cacheable and then the others in the list are usually the well known font t

The ones that are single/small subset glyph are fine since it’s a few bytes and very cacheable and then the others in the list are usually the well known font types “arial” etc. which don’t even need the site to supply a new font file (you can specify fonts in css with a file or simply a name of a common font/font family). So no real issue at all.