AccountList.cmp:

<aura:component controller="AccountListController"
                implements="flexipage:availableForAllPageTypes,lightning:actionOverride,flexipage:availableForRecordHome,force:hasRecordId,forceCommunity:availableForAllPageTypes,force:appHostable" >
    
    <aura:attribute type="Account[]" name="acctList"/>
    <aura:attribute name="mycolumns" type="List"/>
    
    <aura:handler name="init" value="{!this}" action="{!c.fetchAccounts}"/>
    
    <lightning:datatable data="{! v.acctList }" 
                         columns="{! v.mycolumns }" 
                         keyField="id"
                         hideCheckboxColumn="true"/>
    
</aura:component>

AccountListController.js

({
    fetchAccounts : function(component, event, helper) {
        component.set('v.mycolumns', [
            {label: 'Account Name', fieldName: 'Name', type: 'text'},
                {label: 'Industry', fieldName: 'Industry', type: 'text'},
                {label: 'Type', fieldName: 'Type', type: 'Text'}
            ]);
        var action = component.get("c.fetchAccts");
        action.setParams({
        });
        action.setCallback(this, function(response){
            var state = response.getState();
            if (state === "SUCCESS") {
                component.set("v.acctList", response.getReturnValue());
            }
        });
        $A.enqueueAction(action);
    }
})

AccountListController Apex Class:

public class AccountListController {
    
    @AuraEnabled
    public static List < Account > fetchAccts() {
        return [ SELECT Id, Name, Industry, Type FROM Account LIMIT 10 ];
    }
    
}

Output: