Spoiler warning:
I know some people hate looking at guides before launch for new games so don't follow the link if this is you.
Personally, I find consuming information about a new game before launch to be something I enjoy a lot and I like to go in well-informed.
Whether you follow a guide to the letter, just read the information and use that to make your own build (what I tend to do), or dismiss it completely is totally up to you. But the crew at Maxroll is top-notch and not likely to lead you astray with wrong or outdated info
They have done "tier lists" for leveling, farming, end-game, and Nightmare dungeon pushing and have many up-to-date builds. Ironically some of the classes with builds for "S tier" leveling do not appear at the top of the end-game tier lists. Druid and Barb for example are both rough at leveling but hold the top spots in the end game.
I'll just link the leveling Tier List and you can explore from there if you want.
https://maxroll.gg/d4/tierlists/leveling-tier-list
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