Jana
The very first thing you need to decide for yourself is "what do I want my asset allocation to be". It helps to have an Investor Policy Statement (IPS), but if those are all words and concepts you are unfamiliar with, just start by asking "how much of my money do I want in stocks, and how much in bonds." Do I want mostly US companies, or do I want more international exposure.
All the Voya target solution funds have varying percentages of stocks and bonds. The closer the year (e.g. 2020 is the 'soonest') the more bonds it has. As time goes on each one of those funds will replace some of its stocks with bonds to (hopefully) reduce volatility.
The BlackRock Russell 3000 Index is a broadbased index made up of US companies. It's fairly close to Vanguard's total market index fund.
Fidelity total bonds holds all bonds. All the others seem to be actively managed funds