If I recall, that's not the reason for the abundance of fonts, as both Quenya and Sindarin use the same script. I think most of what you could find on LaTeX is your basic Tengwar script, but in different styles, so that they look like they were from different historical periods (one looked a bit like Celtic uncials, one almost like blackletter etc.).
(Boy, I'm really showing my nerd colors in this thread)
Hmm, I'll take your word for it, as I haven't looked, but I wouldn't be surprised if some of the typefaces were runic (Cirth) rather than Tengwar (the celtic ones you mentioned, in particular).
(Boy, I'm really showing my nerd colors in this thread)