The saurapelta is a great gatherer for stone, wood, thatch, metal, and berries. I also really like Andrewsarchus for gathering berries and fiber. Both can be ridden without a saddle so you can tame them early.

For the Andrewsarchus you need to be at least level 45 to be able to passive tame it. The saddle (which should really be an implant IMO) really only serves as a form of armor.

Second on the saurapelta and andrewsarchus, they're my go to for metal and fiber respectively.

I did rough tests and ended up deciding to use gigantspinosaurus as my berry gatherer atm, there are probably better choices but they're pretty quick and gather far more than I need. Plus I love using that wide tail swing to just mow down whole patches of plants lol.

Edit: I forgot, plateosaurus! They gather more narcoberries than other berries and turn them into narcotic in their inventory

Jumping on to ask a similar question, but I'm looking to know about passive gatherers; ie, dinos that harvest resources while on wander. I use Dino Patrol and like to collect harvesters and set paths for them to collect resources for me, and it'd be nice to utilize some of these new dinos.

Just thought I'd update this...Saurapelta now just collects berries and Andrewsarchus was removed so unfortunately my recommendations are pointless now. Sorry. Styglimoloch can get you metal and such early on I think, though I haven't tried taming one myself yet.

Just bumping this since nobody ever really made a comprehensive list of alternatives and
Utility tames so I took a crack at it.

Camarasaurus: Stone(No reduction, worse then Doed) Also unfortunately regularly has the dismount infinite falling glitch(Honestly if it weren't for this they'd be a swell Doed alternative)

Segnosaurus: Left Click Harvests: Berries/Flint/Metal/Stone (Tames best off Honey)
C Bite attack Harvests: Meat/Berries/Fiber/Honey from Hives

Rajasaurus: Reduces weight of Metal/Wood/Stone/Crystal/Obsidian/Element Ore/Blue Gems/Red Gems/Green Gems, in inventory by 60%

Shunosaurus: Left Click: Harvests Berries
Right Click: Harvests Metal
C Tail Swing: Same as above.

Austroraptor: Right Click: Harvests Fiber

Banguela: Harvests 4x Honey/20x longer spoil timer for Honey/Reduces Weight of Honey to 10% of normal(Needs Honey to tame and torpor drops fast)

Narwhal: Left Click Bite gathers Silica Pearls

Herrerasaurus: Somewhat utility(Passive "venom" creation can be used like Narcotic(crafting/keeping tames asleep/etc.)

Australovenator: 8x gather rate for Organic Poly, Organic Poly weights nothing in inventory, Organic Poly preservation multiplier of around 1000

Sauropelta: Left Click: Harvests Berries
Reduces Weight of Stone/Wood(Maybe more)

Concavenator: Main use is to inflict Corrosive Acid on Rhizodus for taming the large fish.

Bellusaurus: Right Click Headbutt: Harvests Metal
5x Harvest rate on Gems/Crystal/Element Ore
(Only found on AB)

Tarbosaurus: Reduces Weight of Stone/Metal/Wood
Left Click Bite: 100% Armor Negation(Also Deals 1.5x damage to Reapers/Nameless/Rock Golems)

Becklespinax: Element(Shards/Dust/Element) weight 5% of their normal weight, Metal(Metal Ingots/Metal/Scrap) weight 50%
Increased Robot Damage(Enforcer/Defense Unit)
12x Harvest Multiplier on Element Dust, 18x for Shards, 27x for Element
Right Click: Mines Rocks and Structures in Ruined City, also Element Veins
(Extinction Only/Needs Element to tame)

Red Panda: "Cuddle Buddy" Buff(Heals 3.2 Units of health per second)
Buff lowers aggression/startle to and from creatures. Needed in Pentaceratops and Deinocheirus taming.

Pentaceratops: Deals 4x damage to all corrupted
(Only on Extinction, Requires Apex Egg Kibble to tame alongside Red Panda)

Binturong: Drains Passive/Knocked out creatures food when in range(Popcorn Scent buff)

Balaur: Left Click: Harvest Fiber

Elephantosaurus: Left Click: Harvest Thatch(Trike Equivalent basically)

Stygimoloch: Left Click: Harvest Fiber
Right Click: Harvest Metal

Plateosaurus: Turns Narco berries into Narcotic in inventory, also increased Narco berry harvest not sure by how much.

Lucanidae: Left Click: Harvest Wood(Best in the mod/among Vanilla options)
(Must tame lower level one to make better taming food. Basically Find low level > Tame with wood slurry at level 95 > Use low level to make better taming food(Redwood Slurry best taming food) > Tame good levels)

Phosphatodraco: Salt and Sulfur Weight 15% of their natural weight, However Stone/Metal/Crystal/Obsidian/Scrap Metal weight 2.25x times more then usual.
Right Click Peck: Harvest Minerals(Mostly used for Salt and Sulfur)

Archaeoindris: Left Click: Harvests Berries/Fiber
X to Throw selected ammo(Can use Shot Put ammo to knock out Rock Golem's and Titanosaurs)
Can basically throw everything that ballista's and catapults can fire(Spear Bolts/Chain Bola/Jars of Pitch/etc.)

Psittacosaurus: Passive Quill production can be used as low tier tranq arrows early on.

Gargoyleosaurus: Left Click: Harvests Wood.(Organic Chainsaw)

Eryops: Living Bear trap (Can set it to do no damage for use in trapping(Level/Breed Stamina)
Can only breed aquatically

Vallibonaventrix: Reduces weight and preserves, Megalodon Teeth/Angler Gel/BioToxin/Basilo Blubber/Ammonite Bile

Cedarosaurus: Reduces Weight of Wood/Stone/Metal equal to Rajasaurus
C Kick: Harvests Wood/Stone/Berries

Immune to Jellyfish Category
Ichthyovenator
Anthracosaurus
Brachauchenius

For those with AC2: Part 2(Formerly Kami's) there are these as well.
Skorpiovenator: Glass cannon Megatherium
Passive tame
Auto crafts chitin/keratin into cementing paste in inventory(1:1)

Alamodactylus: Flyer Megatherium
No armor bonus to insect killing but damage instead gives stamina while enraged.
Only in Deserts

Ceolophysis: X key ally Preen(Heals ally and removes leeches/lampreys.

Padillsaurus: Sauropod Yuty. Not as effective.
X for intimidate
Alt+X for buff

Edmontosaurus: Rex herbi equivalant.