A List of all the Android (Kotlin) Jetpack and other important and mostly used(depends on requirement) libraries' dependencies(app level build.gradle).

build.gradle

apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
apply plugin: 'kotlin-kapt'

android {
    compileSdkVersion 29
    buildToolsVersion "29.0.3"

    // for databinding
    buildFeatures {
        dataBinding true
    }

    // for java 8 support
    compileOptions {
        sourceCompatibility = JavaVersion.VERSION_1_8
        targetCompatibility = JavaVersion.VERSION_1_8
    }

    // for java 8 kotlin support
    kotlinOptions {
        jvmTarget = "1.8"
    }

    defaultConfig {
        // change it to your applicationId
        applicationId "com.example.appname"
        minSdkVersion 21
        targetSdkVersion 29
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: "libs", include: ["*.jar"])
    implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"

    // core and appcompat
    implementation 'androidx.core:core-ktx:1.3.0'
    implementation 'androidx.appcompat:appcompat:1.1.0'

    // constraint layout
    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'

    // google material theme
    def material_version = "1.1.0"
    implementation "com.google.android.material:material:$material_version"

    // kotlin coroutines
    def coroutines_version = "1.3.7"
    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:$coroutines_version"

    // viewmodel and live data
    def lifecycle_version = "2.2.0"
    // for viewmodel
    implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:$lifecycle_version"
    // for livedata
    implementation "androidx.lifecycle:lifecycle-livedata-ktx:$lifecycle_version"
    // for lifecyclescope
    implementation "androidx.lifecycle:lifecycle-runtime-ktx:$lifecycle_version"
    // for java 8 support
    implementation "androidx.lifecycle:lifecycle-common-java8:$lifecycle_version"

    // retrofit
    implementation 'com.squareup.retrofit2:retrofit:2.8.1'
    // gson core
    implementation 'com.google.code.gson:gson:2.8.6'
    // gson converter(retrofit)
    implementation 'com.squareup.retrofit2:converter-gson:2.8.1'

    // room
    def room_version = "2.2.5"
    // room with compiler(annotation processor)
    implementation "androidx.room:room-runtime:$room_version"
    kapt "androidx.room:room-compiler:$room_version" // For Kotlin use kapt instead of annotationProcessor

    // optional - Kotlin Extensions and Coroutines support for Room
    implementation "androidx.room:room-ktx:$room_version"

    // fragments
    def fragment_version = "1.2.5"
    implementation "androidx.fragment:fragment-ktx:$fragment_version"

    // Navigation(fragments in activity)
    def nav_version = "2.3.0"
    // Navigation Fragment
    implementation "androidx.navigation:navigation-fragment-ktx:$nav_version"
    // Navigation UI
    implementation "androidx.navigation:navigation-ui-ktx:$nav_version"

    // testing
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'

}

The version numbers of all libraries are taken as of July 2020, the latest version of libraries may change, and the Android Studio IDE will autosuggest if any libraries get old.