AK47 really doesn't belong in this topic. Bad quality, and if you manage to get a good sheet it will wear and lose grip so quickly that you can't even get used to it properly.
That being said, if you take a yellow sheet and do get used to it, it's a very easy rubber to play with. It just doesn't do much.
For opening up, that really depends on your preference.
If you like soft, Euro rubbers, Vega Europe is very easy to grab a ball with.
If you like medium, Euro rubbers, I would suggest Rakza 7.
If you like it harder and/or less sensitive to spin, Fastarc G1.
In the Chinese style rubbers, I think Mercury 2 is very easy to use, also easy on the wallet. The Medium variant feels like the most versatile option here but YMMV. I think I played someone else's Soft before and it was quite Soft. Like Vega Europe levels. Very comfortable to play with.
Then of course there's Hurricane 3. The 37 degree variant is OK, but it feels closer to Mercury 2 than to Hurricane 3 so adjust your expectations. Topsheet grips and spins really well, but it's quite an acquired taste in my opinion.
Last but not least, it's important what blade you pair them with. Harder rubbers often do better with a more solid blade behind them. That could be a harder surface, stiffer, the addition of a fiber, anything that reduces power loss into the blade so that the sponge can be engaged more reliably.