The existence and meaning of subtypes is often discussed heatedly...

Let's assume for a moment that following subtypes exist:
ENFj (Ethical Subtype) & ENFj (Intuitive Subtype)
INFp (Ethical Subtype) & INFp (Intuitive Subtype)

How would you see these four types differing? For example in things like:
- Strenghts and weaknesses
- Visual identification
- Behavioral differences
- Attitude/motivation concerning materialistic ambitions
- PoLR
- Dual relations (dual seeking function & hidden agenda)
- etc.

What do you think in light of socionics theory? How about any real life examples?