Improve experience of defining data object field type

With increasing number of available classes it's harder and harder to define type of a data object field.

The most common types (String, Integer, Double, Boolean) are mixed with others which makes it difficult to find them.

Business users might not understand the types as String, Integer, Double or Boolean - we might introduce a simplified set of the common types as Text, Number, Real number, Truth value or similarly.

Dropdown ordering is quite weird, not alphabetized, mixed case, ... which is confusing to the end-user.

It might be interesting to split the types into categories because usually there are 20+ types - simple types, custom types, data objects, Java types, ...