Where can I find a decent Seal Script font?
http://web.hku.hk/~jwilam/chinese/font.htm

There's two:


bnucdp.ttf
ebas927.ttf (link broken; try https://www.moedict.tw/fonts/truetype/cns11643/)


Note that 說文 records many variants, so the default one that appears when you type Chinese may not be the "orthodox variant" that you're looking for (I know from experience because I've used these fonts before). If you're good at reading seal script, you should open the font with a character map to get the unicode directly to type the variant you want.

Also, many characters that we use today may not have existed as a seal script character. They may have used another character for the same word, or the word just didn't exist back then. You can't do anything in this case except construct your own seal script character for those.

These problems I've mentioned might be the same problem you're having with your existing set of 9 fonts, and you may have these two fonts already.