[1] Test of HTML+CSS small caps ( 版) http://joeclark.org/standards/small-caps.html
[2] Bug 458634 – Small caps do not look right with OpenType fonts that have the smcp feature ( 版) https://bugzilla.mozilla.org/show_bug.cgi?id=458634
[3] Bug 475240 – Can't use capital font via font-variant: small-caps; in @font-face ( 版) https://bugzilla.mozilla.org/show_bug.cgi?id=475240
[6] console-setup Georgian fonts, need test. მიშველეთ გეთაყვა.[BPG&GIA], Ben Laenen, 2007/06/18 20:05:18, https://groups.google.com/g/geofonts/c/lxme64FtS60/m/6WK3BODpHP4J
There are only a lot of letters in the standard that look like they are smallcaps that can be found all over the different Unicode blocks, but they aren't smallcaps and cannot be used that way. Latin smallcaps usually have a height which is a bit taller than x-height (in a lot of cases, this is not a standard rule, but it's often applied), while the letters that look like smallcaps in Unicode have x-height.