You may want to check Angi Bemiss arrangements. Hers run the range of classic to theater to pop and would be suitable for your playing level.
Sylvia Woods has some excellent arrangements. Her Beatles book (fairly advanced), Groovy Songs of the 60’s and 22 Romantic Songs are nicely arranged. As for some of her current arrangements, well, you have to start off with good music to have a good arrangement…So much of the music in the past few years doesn’t have a clear melody line and does not translate well to harp.