Yep. Looks like a Raleigh of some sort. Probably isn’t.
My money’s on some sort of weird home-brew frankenbike frame. Perhaps somebody actually tried (and succeeded in) bonding aluminium tubes to (what was once) a fairly ordinary steel frame?
Or it’s simply a Taiwanese oddity. Not to put too fine a point in it, but the build quality in some of those close ups appears to leave a little to be desired.
Why would anyone with knowledge of metals knowingly design something with steel and ali held together?
Looks like a fun hack bike though, OP!