I was just reading an article from Grapple Arts about some judo takedowns that the author feels are great for BJJ- he goes over the suma gaeshi, and the ura nage, but I would make an argument for foot sweeps.
They are pretty unassuming- not the fancy, fun throws that one thinks of when they hear judo. They are however very much a part of kodakan judo, and are great options when it comes to taking down an opponent.
While you may have to change up your entrance since bjj players prefer to stay low and bent over, I usually like a good ko uchi gari or uchi mata to get someone to the ground. My teammates have found success with some foot sweeps as well, including okuriashi harai and sasae tsurikomi ashi. The hardest parts of these throws really is timing: getting just the right moment to catch your opponent off balance.
Just some suggestions- again, not the huge throws that one thinks about, but they are effective and I would suggest giving them a try. That’s all for today- have a great day everyone!