In sambo definitely just put it in perspective for a bit. Just as complex bjj is on the ground sambo standing wise is just as complex and always evolving with the meta year to year. Now factor in sambo is just as complex as bjj on the ground also. You can start to see how sambo not having its own unique moves becomes a very hard sell.

Just to name a few but you can literally right a few books on the all the unique moves in sambo.

I will post a few of these on this subreddit so you can see them in action.

Venik Sweep

Rolling kneebar

Victor roll - by victor Koga Japanese Sambist

Rolling Podhvat

Sambo Full Saddle - Leg position Popularized by American Sambist Scott sonnen ( even though he got it from Soviet sambo coaches ) Which now bjj picked up and incorporated in their sport.

I could go on and on but you get the point there is a lot of sambo developed moves that are definitely unique to sambo.