Rainbow Falls Trail - This is still going to be the best bet. The trail is packed down. You will find it becoming slushy as the weather warms up. Most people hiked up Rainbow yesterday.
Trillium - A few folks have come up Trillium. It is still going to be slow going. There are trees down along the way.
Alum Cave Trail - I had guy staying in the shelter who made it up Alum. He said it was tricky. There are areas around the cables that have big snow drifts. There are no cables to hold on to. They are buried in snow and below your feet. I am still recommending hikers to NOT use this trail.
Bullhead - No one has been out that trail.
Boulevard - Do Not Attempt