I can only speak for Unity but Sfx, music, and graphics can be ported to any engine. Tilemaps too if you use Tiled2Unity or another plugin.
The closest way you can get code ported over to Unity is using something like Playmaker or PlyBlox/PlyGame.
Unreal engine has Blueprints which is visual coding too.
If you are working in 3D I recomend the other engines and just use Construct to prototype their ideas.
The other two engines are also better for collaborative game development. I recommend GitHub for that.
Not everyone will need to be able to code in a team. If you can prototype and make maps/levels in their engine choice you should be okay.
Otherwise, Construct is easy enough to learn that the other team members can switch to it