Does these minis exist?

[white knight]

Regarding the flagbearer, Eureka did this one years ago. It was never released to general sale, but Nic has been known to cast stuff like that on demand, so it might be worth dropping him a line.

[traveller]

Wow!! that one is spot on!

[former user]

good miniature, but it is a Wehrmacht flag bearer and not a nazi party standard bearer
if this counts anyway...

[white knight]

good miniature, but it is a Wehrmacht flag bearer and not a nazi party standard bearer
if this counts anyway...

Well, he is sculpted as if wearing the black uniform, with the shirt and tie and everything.

[former user]

well, OK - no need to go into uniform details now
from what I can see from the difficult angle of the photo, it looks like a late-war parade uniform

Anyway,
if the flag is sculpted such that You can chop it off and replace it with a standard, the figure should do the trick