>>18158030 (OP)Best way to do it is watch some random matches on youtube, see who stands out to you either visually or in ring. As you familiarize yourself with them with more matches you'll find someone else to follow and branch off with, so on and so forth. Here's a basic run down of the bigger joshi companies and their product to help you decide a starting point:
>TJPWCute girls doing cute shit. Idol wrestling in its most base form, shoot idol group sings before each show and most matches involve comedy or lighthearted spots. They'll occasionally have good in ring matches in the more typical sense but that's largely reserved for their vets like Rika Tatsumi, Shoko Nakajima and Miyu Yamashita.
>StardomThe biggest joshi promotion running. Also uses a lot of idol marketing and presentation but the in ring is taken a bit more serious. Their in ring can be criticized as 'wrestle fast and pause for the crowd to clap' but they usually deliver really good singles matches when it's PPV time.
>Sendai GirlsIndie run by Meiko Satomura for many years, has about 6 contracted wrestlers and they focus almost solely on wrestling. Much more traditional in their approach to in ring. You'll see occasional hardcore matches with DASH Chisako, and their main star Chihiro Hashimoto has some of the best german suplexes you'll ever see. They have a huge backlog of their shows on their youtube and are now available on the same streaming service as TJPW.
>MarvelousSendai Girls but even smaller scale. Run by AJW legend Chigusa of Crush Gals fame. Has roots going back to AJW with using the same AAAW tag and heavyweight titles.
>Oz AcademyLongest running indie lead by Mayumi Ozaki. Usually focused around Seikigun, a faction of heels including Ozaki, that also kayfabe runs the promotion and puts the resident babyfaces through hell. Oz has recently broken up Seikigun by having Ozaki kicked out and has seemingly become less story focused and putting on matches to put on matches.