Hi there,I have gone ahead and opened RFP bugs for the fonts which are not in Debian but needed by r-cran-bslib (referred to by Nilesh above).
Nunito Sans https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1009730 Neucha https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1009729 News Cycle https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1009707 Best, Eric