We like aspects of all three of your entries. We would like the figures to be reaching for a cross as in #28, and the shape and separate color of the comet's tail as in #8. We like the placement of "hope and healing for all" in #28 suggesting a globe, but we feel the background pattern is too busy. Might #29 be modified adding the cross instead of the star, giving the comet's tail a separate color, and placing the words "hope and healing for all" in a circle?
What would #48 look like if the three figures were some variation of red and deep purple? Could the cross and "comet tail" be set off in a different color then?