Question about Glorious PC Gaming Race Aura Keycaps v2

Not quite true. Of course Glorious "only" states the compatibility of their own keyboards, they cannot recommend or even test third-party products.
In general, these keycaps are mechanically compatible with all "cherry" swiches. I can't tell you whether you have all the keys in the right size in the set (I'd have to sit down and check, just like you). the picture will help you quite a bit 😊 At first glance, it looks quite good - it's primarily ANSI layout (and ISO layout).

No, according to the manufacturer, they are only made for Glorious PC Gaming Race keyboards.