Thank you for submitting the four designs - I like the words and prefer the blue and black, but am not too keen on the marks you've used.
Rather than use the IU concept, could you try and produce a mark that signifies Connectedness...Clarity - in the context of getting a message across to an audience - communicating / presenting with clarity - online, in print or face-to-face?
#107 and #108 are my preferred designs for the marks. However, I think their weight is too heavy - how about making them less bold to balance them with the words?