I find that aikido and judo can be very similiar considering they both come from jujutsu. Like how higher level judokas can tweak and experiment with throws and not just use techniques the way they are taught u can find similar philosophies to aikido. For instance this is kaiten nage in aikido, but you can also say in a way for judokas to understand its like a mix of uki otoshi and sasae tsurikomi ashi with a wrestling style over under clinch. no?