And no "participating" does NOT mean pays dividends. As you found out RNA policies are participating but they do not pay dividends.
That's incorrect, participating would be reference to participates in divisible surplus, which would mean could earn dividends. Non-par WL simply means that it follows the guaranteed cash on a WL policy. All WL policies have cash, as they are all endowment contracts that endow at a certain age, requiring some form of cash value accumulation. Dividends would take the policy beyond these guarantees.
As for the original questions posed by AllGold:
If you're looking for lower required premium coverage (i.e. cash value isn't really a huge deal, but you still want dividends and cash growth) Ohio National's Prestige Value II, Guardian's L121, and Metlife's Promise Whole Life are all paid up at age 121 products, meaning they'll have some of the lowest required premiums out there.
If Dividend performance is important, then Ohio National's Prestige Xcel, Penn Mutual's Flexible Whole Life 100, and Massmutuals Legacy 100 would top the list.
Again, the focus is more death benefit in both cases, if you really want to talk about cash, there's a completely different way to look at this.