Since people seem very keen to compare any new farming RPG to Stardew Valley (which is funny to me, since Stardew Valley formed its roots from Harvest Moon/Story of Seasons but some people imply or outright say that HM/SoS copied Stardew Valley), I have a comparison of my own:

Stardew Valley, currently ranking as my most played game on Steam, clocks in at about 1350 hours as of this review. Through many hours of vanilla play and significantly more hours of modded play, I have been playing since 2016 and last played on July 6 (mainly because I'm waiting for the 1.6 update).
Cornucopia, since purchasing it on a whim about a month ago, has absorbed about 430 hours of my time as of this review (and, for those of you who may say that "the math ain't mathin," September is 720 hours according to a Google search; so, if you were wondering, the math does math, but I have willfully foregone sleep to play this game, hahaha). There are no mods for the game that I am aware of, but I am hopeful that they will come at some point.

I make this comparison to emphasize that I am heavily enjoying Cornucopia. For those that may wonder, "But is it like Stardew Valley, though?" I say that Cornucopia is a farming RPG that can stand on its own merits, mostly due to so many unique mechanics and gameplay elements.

Cornucopia is developing into a jewel within the farming RPG scene. There are so many things I like about this game, despite it being in Early Access. Here are my favorite aspects I have found thus far:

The colors of the livestock are so fun. I literally have a green-plaid cow and a vibrantly blue chicken, to list just two of the many different patterns and colors the livestock can have. The livestock also have likes and dislikes. And those likes and dislikes are different per animal! Please don't quote me, but I think the category of item is the same (so, cows all like and dislike a certain category, and chickens all like and dislike another certain category), but the items themselves are different for each cow and chicken.
The randomization also allows for fresh replays of the game. Although I am still on my first save, I have heard through the Discord that townspeople's birthdays and likes/dislikes are randomized with each playthrough. I found that fascinating! So, if you're like me and after taking an extended hiatus from a game, you forget everything and start fresh with a new save, it feels like a new experience with different things to dynamically learn alongside what you already know about static mechanics.

There are a good amount of field crops in the game, as well as a healthy number of trees and bushes. I'm all for variety, so I hope there will be even more that are added in the future. But what's currently here will definitely satisfy me for now. There are also a lot of foods available to cook, which surprised me when I first started playing.
In addition, there are a fair amount of makers. I love makers in games, so I'm always an advocate for them. I believe that there is room and potential to add more makers, but what is currently existent is, for now, sufficient for my enjoyment. Although I do wish there was more variety within some of the maker products (e.g., the wine maker only makes "Wine" regardless of the fruit put in it and makers only accept one input so items can't be combined to make new ones), I am so happy that there are makers at all. The cheese maker (called the "Dairy Densifier," I believe) is especially fun to me because it makes a random variety of different cheese with the milk input. It's interesting to see what random cheese comes out!

I rarely enjoy fishing in any game, but this game is special in that regard, mainly by just how different it is. The fishing minigame is a Plinko board. I would have never thought to make a fishing game like a Plinko board, but now that I've seen it, played it, and enjoyed it, I'm happy about it.
Cooking is also interesting: you put your ingredients into a cooking utensil (as of this review, the utensil used is irrelevant) and stir them around so they don't burn, then they pop together to create the dish. While I am a fan of involved cooking games (à la "Cooking Mama"), I appreciate that the cooking isn't just selecting ingredients and pressing a button to receive the dish. The cooking system involves minimal interaction, but interaction nonetheless!
Also, there's a card system in which you can receive various buffs to your character, companions, makers, or item drop rates; random quests involving daily activities such as talking to townspeople, farming, cooking, or monster slaying; and cooking recipe and randomized item scratch-off cards to learn new recipes or receive random items, respectively. This is a non-exhaustive list; there is more to this system! Four cards can be active at one time with most lasting 7 in-game days, which is quite generous.

Item descriptions can be so dull. However, in Cornucopia, I find myself reading all of the descriptions and constantly being entertained by what I see. While some of them are strictly descriptive (e.g., the "Bread Slice" item reads "A single slice of bread"), one of my favorite entries is for the "Chicken Wing" item, which reads "Ain't no thang!" I am impressed by the humor in otherwise overlooked or underappreciated text.

Speaking of the text, the dialogue with the townspeople is so animated. Not only is the dialogue not a bore to get through, but I love watching some of the words literally bounce around, sway about, or have rainbow coloring, among other elements.

While I am a member of a number of online communities and Discords, I usually tend to stay to myself and lurk. However, in the Cornucopia Discord, I feel so encouraged to participate beyond just reacting to the occasional post or marking things as "read" to get rid of the notification bubble. I enjoy actively communicating with the fellow fans, answering questions, asking questions, and sharing my experiences in the game (either positive, like a fun screenshot, or constructive, such as a bug I found) or even in real life (there is a pet pictures channel and I have absolutely posted my dogs).
Speaking of the community, I also deeply appreciate the receptiveness from the developers about any gameplay problems that arise. I've submitted multiple bug reports, and each one has been addressed and oftentimes corrected within the next update. Updates are also so frequent, due in part to the community staying on top of bug reports but also due to the dedication of the developers to enhance the gameplay as much as possible. Polls are even posted so that we can have a say in the direction of the game, and there is a specific Discord channel to voice our thoughts on upcoming mechanics or suggestions of our own. If we have problems with existing mechanics, we are free to say so and talk with a developer and with other fans about what we feel could be improved and how.

If you want to see for yourself, please join the Discord: https://discord.gg/cornucopia