Mini (lower case) is used as make for the old classic shape from 1970 rebranding when Austin/Morris etc removed until 1990 when Rover adopted as new title until classic shape production end in 2000. MINI (upper case) means 2000+ under BMW ownership and was their official rebadging logo format in block capitals, so each group is distinct in real life with a 10 year break between them. This is reflected pretty much in the database entries as everyone seems to know the protocol, even if the filters don't register the difference.

[Comment edited as 1st go missed out some info]