How about Misty Fuse? It is a fusible web, so doesn't come with a paper backing. However, it's easy to add one. Just iron it between two sheets of parchment paper and peel off one sheet while the paper is still warm. The biggest difference between Misty Fuse and Steam a Seam is that Misty Fuse is much softer, whereas Steam a Seam will add a little stiffness. Personally, I would prefer Misty Fuse.
Also, I don't know about nowadays, but I believe Steam a Seam 2 went out of production for awhile because the makers of the unique paper on it went out of business. It wasn't available for a long time. When it finally did become available again, I saw people complain that the paper no longer was easily removed. I used the original version years ago and liked it but, once I found Misty Fuse, I wouldn't go back.
Edit: I just went to Amazon and found Steam a Seam 2 available there from third party sellers. Here is the link:
https://www.amazon.com/Steam-Seam-Ir...=steama+seam+2
Edit 2: I see that Steam a Seam 2 does not require sewing down. Misty Fuse does, unless it is used in a wall hanging. If used in a quilt, it would need the edges sewn down to be permanent. Reading the Amazon reviews, I see that the newer complaints about Steam a Seam 2 are that the paper is so thick you need a light table to trace onto it, and some people found it difficult to get a tracing tool to work on it.