Here are some potential "new" builds for season 18:
Jade Harvester Crimson Fury Witch Doctor From BigDaddyDen76
Details:
https://www.diablofans.com/builds/104565-s18-jade-crimson-fury-gr-solo-2-6-6
Crimson Rainment Generator Monk From Wolfcryer
Details:
https://www.diablofans.com/builds/104625-season-18-crimson-raiment-generator-monk
2.6.6 Crusader, Demon Hunter, Monk, Witch Doctor and Wizard build preview From Bluddshed
| Class | Build | Target | |
|---|---|---|---|
| Crusader | 2.6.6 Roland Sweep Push Build | GR100+ |  |
| Crusader | 2.6.6 Shield Bash Speed Build | T16 | |
| Demon Hunter | 2.6.6 Natty (Natalya’s) Strafe Speed Build | T16 | |
| Monk | 2.6.6 Uliana Speed Build | T16 | |
| Witch Doctor | 2.6.6 Jade Speed Build | T16 | |
| Wizard | 2.6.6 EB SPEED T16/SPEEDS | T16 | |
| Class | Build | Details  |
|---|---|---|
| Crusader | 2.6.6 Roland | https://www.diablofans.com/builds/87944-2-6-6-roland-sweep-push-build |
| Crusader | 2.6.6 Shield Bash | 2.6.6 Shield Bash Speed Build - Crusader - Diablo III Builds - DiabloFans |
| Demon Hunter | 2.6.6 Strafe | 2.6.6 Natty Strafe Speed Build - Demon Hunter - Diablo III Builds - DiabloFans |
| Monk | 2.6.6 Uliana | Uliana Speed Build 2.6.10 - Monk - Diablo III Builds - DiabloFans |
| Witch Doctor | 2.6.6 Jade | Jade Speed Build 2.6.9 - Witch Doctor - Diablo III Builds - DiabloFans |
| Wizard | 2.6.6 EB Speed | EB Speed T16/GR's 2.6.9 - Wizard - Diablo III Builds - DiabloFans |
Unhallowed Essence Multishot Captain Crimson Fire Demon From Leviathan
Details:
https://www.diablofans.com/builds/104626-ue-fire-multishot-captain-crimson-dh
Blood & Essence Necromancer Speed Farm Build From Lord Fluffy
Details:
https://www.diablofans.com/builds/104566-blood-essence-necro
Diablo 3 S18 LoD Necromancer Singularity Mages T16 Speeds Build 2.6.6 from BigDaddyDen76
Patch 2.6.6 Builds WW, WOL, Archon, Condemn, Multishot Diablo 3 PTR From Bluddshed
Barb starts at 
18:06
Sage Barbarian - Build Guide Season 18 (T15-16)
Raekor Barbarian Starter Build Guide Patch Build 2.6.6 Season 18 Diablo 3
As you can see there’s not much love for barbs in the upcoming season, so I think they deserve a buff, cause they’re trully need it and I’m not the only one who thinks like that…
Buff Barb for Patch 2.6.6 and Season 18 Diablo 3
I know this video is “old”, but as you can see many barb players feel the pain of being the lowest damage dealing class for pushing high GRs, while most of the other classes (except maybe monk and crusaders) enjoy the ride…