The new invite icons are all the same colour and outline. There is almost no functional visual difference between them. With more icons this is only going to cause further confusion.

Each icon has a distinct (but related) behaviour and it should be able to discern which is which at a very quick glance, often as handling these is done as a secondary activity during a conversation.

This can be easily fixed with either additional colours (within the colour-blind friendly range), or much more clearly distinct shapes. A small icon on the same shape is insufficient.