After some more visual brute forcing, there are some offsets for more chars (all are 16x16 pixels):

161-33, 161-127 math symbols, greek symbols, signs, currencies, numbers, geometric shapes
162-48, 162-99 double digits 01-20, digits in parenthesis 0-20, digits in circles 0-10
162-113,162-123 roman numerals I-XII
163-33,163-127 big Latin letters, numbers, ANSI set
166-33,166-88 - Greek alphabet
167-33,167-65 Cyrillic capitals
167-80,167-144 Cyrillic small letters
168-33,168-64 - EU Diactrics
169-36,169-112 - Pseudographics

There were also a large number of Chinese, Japanese and Thai symbols spread around, but due to my lack of knowledge of these languages, they were not recorded....