I found this cookbook supplied with the Wolf steam oven to be helpful: https://www.subzero-wolf.com/~/media/files/united states/product downloads/sub-zero wolf/ebooks/wolf-convection-steam-oven-print.pdf
It takes a while to load.
Edited to add that Emily Rhodes who writes the Steam and Bake blog has a lot of recipes on her site. She also has a small kindle book of holiday recipes (eG-friendly Amazon.com link). I haven't seen that one.