Due Version Catalogs start to fail or go slow with 15.000+ dependencies, this repo is by design unscalable (indeed now it is only adding Kotlin dependencies and no Java only ones for example).
- Add the catalog/s
 
// settings.gradle.kts
dependencyResolutionManagement {
    repositories {
        mavenCentral()
    }
    versionCatalogs {
        create("libs") {
            from("com.javiersc.massive-catalogs:libs-catalog:$version")
        }
        create("kotlinLibs") {
            from("com.javiersc.massive-catalogs:kotlin-catalog:$version")
        }
        create("pluginsLibs") {
            from("com.javiersc.massive-catalogs:plugins-catalog:$version")
        }
    }
}- Sync Gradle with IntelliJ and the accessors will be generated
 
// build.gradle.kts
dependencies {
    implementation(libs.jetbrains.kotlinx.kotlinxCoroutinesCore) // libs-catalog
    implementation(kotlinLibs.jetbrains.kotlinx.kotlinxCoroutinesCore) // kotlin-catalog
    implementation(pluginLibs.jetbrains.kotlin.kotlinGradlePlugin) // plugins-catalog
}- 
libs-catalogManual selection of libraries, can include non Kotlin (only Java) libraries, like retrofit. - 
kotlin-catalogAutogenerated Kotlin libraries, any library from MavenCentral should be here. Powered byKAMPscanner. - 
plugins-catalogManual selection of Gradle plugins. 
All docs are available on the Massive Catalog website
Thanks to @mpetuska for his help and his amazing project, KAMP.