Maybe, I've tested other flowers, only poppies and dandelions will spawn a few of each other when using bonemeal.
I've just tested with a few new worlds and found slimes do spawn in daytime but the rate seems to be much lower. I guess in the previous testing it was just because my luck is bad and sorry for interrupting.
Steps to Reproduce:
Enter the end
Place a lava source block at any point on the edge of the main island
Wait until the final flowing lava reaches y=0
Put a water source block adjacent to the lava source block
Observed Results: Lava source block turns into obsidian, the first flowing lava block turns to obsidian, other flowing lava blocks remain unchanged and soon flow into the void and disappear
Expected Results: All flowing lava blocks should turn to cobblestone, just like when the above procedure is performed in Java Edition
That means when using bonemeal onto an underwater block (dirt or sand or stone, most blocks should work), plants including seagrass, coral, and coral fans should spawn near the site you use the bonemeal. But I just tested in my survival world and a new creative world and nothing spawns.