These are all co-op unless stated otherwise.
Bakaara = Wave 70
Lockdown = Wave 55
Seatown = Wave 52
I think all mine are above 40 or 50 except for 4, which are all in the same "category/tier". Outpost, fallen, Hardhat... andddd crap, what's the 4th in that tier? My best for each is 37. It's weird. I can't get past 37 for any of them
Don't play much solo, but one I did recently was Black Box Wave 44 I think.
If you're Xbox and are up for doing co-op some time, i am always up for Survival so send me a PM on here for my GT.
My bests aren't anything to brag about, however I do rank rather well on some of the leaderboards.
For example, I only made it to wave 39 on Piazza solo, but that puts me in the top 200 in the world on xbox.
Wave 38 on Oasis split-screen, top 400.
Wave 33 on Mission, top 600.
Wave 36 on Liberation, top 1000.
Wave 33 on Decommission, top 100.
Of course the rank on the leaderboard depends on the map's difficulty, how high up it is in the list, weather it's a dlc map, a content collection map, etc.
For example, wave 34 on Resistance only puts me in the top 15000.