sinularia fingers aren't necessarily longer or shorter than capnella, nepthea, etc. ...it all depends on many parameters. It's not a good way to ID.
i'm sticking with sinularia.... however it's 99% not capnella/kenya tree, imo. And that's the little amount of detail I see from the polyp structure bw the two, not the shape of the "finger".
To be 100% sure, i need to see a decent close-up of the polyp, that's how the ID can be made definitively. Capnella is very distinct, almost cup-like, in an upward direction, just like in your GARF pic (it's similar to how a. millepora's coralites are organized).
The OP's polyps do not exhibit that characteristic from what i can see