What do you think, IEO better than ICO or STO or they are just the same with only difference in system?
Yes they are same just collecting money on different systems. I can't see much success on IEO also. After listed exchange for trading IEO coins dumped hardly. So most of investor's in lose even they hold it. I can't see much project about STO, not sure if I am missing something. But likely all are same.
You should explore about STOs because these offerings are far better especially the newly launched CTOs are better than all of the offerings. CTOs are better than both IEOs and ICOs no doubt because the Consumer Token Offerings have more benefits than those of the Initial Exchange Offerings (IEOs), Security Token Offerings (STOs) and definitely the unsecure Initial Coin Offerings (ICOs).