Any Counter to JMK with SEE or SLKR ?

I've had some success with SEE, armorer, thrawn, gba, and wat. armorer a little more than 20 sp faster than thrawn. both are as fast as i can make them. and the big key. all health on SEE. as much as possible with speed. i also link gk and cat but some videos show gk and ahsoka to get ulti faster. i find getting rid of cat most important. this is working for me now about 75% of the time with two accounts. sometimes better sometimes worse