Moving to SF/San Jose from Canada - Need credit advice

Hi everyone,
I’ll be moving to California in May and will need to lease two cars (looking for one electric and one SUV). My wife and I both have great credit in Canada but I believe that will not transfer over when we get to the the US. It will be as if our credit history is starting over again.
I’m curious to know how difficult it will be to get a good lease in this situation? Will I need to put additional money down to compensate for the risk? I have family members in Atlanta, If I got them to co-sign would that help?
Thanks in advance!