Your photos did not post.

There are modern ceiling mounted picture rail systems. For example:

https://www.picturehangingsystems.com/picture-rail-systems/ceiling-mounting

If you just need a one-off and never want to move or change the artwork, you can screw eye-screws into your beam and use fishing line to hang the artwork from those.

Please try to re-post the photos. There may be ways to do this on your wall surface without having to hang things from the ceiling.

I'm having trouble getting the photos to post. Basically there is a beam that's on the wall at top by the ceiling for one group and the other 2 I want to hang have 2 beams that I can put something in that will hold either wire or fishing line that does not show. An eye hook I thin would stand out too much. Thank you all for comments and links so far.

Small nails with a head into the beam and monofilament fish line