I got the "How To Make Capcom Fighting Characters: Street Fighter Character Design" book in yesterday, and it was a lot better than I had expected! I've seen some scans of the Japanese one previously, and figured there would be a good amount of content in it (looks like some on Twitter were confused as to what they were even buying). The name I think throws you off, making it sound like one of those "how to draw" books, but goes over all of the current SFV characters (except the last seasons', and some translation notes clarify it since this came out in Japan before they added the chars as DLC), showcases a ton of concept designs and the DLC costumes, goes a bit into the 3D character modeling, has some in-depth interviews on what goes into creating new designs, and shows off some original sketches of the original animations/hit boxes.
Pretty good book if you are into SF and like the designs/what goes into designing them!