Here's a Kimura follow up option that I have been playing with lately. I am sometimes able to finish with it, but the follow ups against blocks and counters have left me with a plethera of options. Try it out and let me know what you think.
The step by step is below the video:
Nate is in my guard and has both his forearms on my chest, keeping tight.
I snake my left arm under Nate's right armpit
I continue to reach my left arm through
I lock my left arm around in a ove.rhook position
I drop my right forearm inside Nate's neck and force his head away from me
I get on my right hip, here I am also looking at the omoplata option.
I step on Nate's left thigh with my right foot and pull my right leg out from under Nate and throw it over the back of his head, If he tries to lift his head up, I can attack the triangle
I get on my left hip and hook my right instep under Nate's left armpit
I scoot back on my right hip and extend my leg outward to Hook Nate's arm
I can now attack Nate's right arm with the Kimura submission