This kitchen sink pack includes my favorite mods of 1.16 and some more. It's meant primarily as a modded experience for the server I run, and no major modifications are made to any of the mods beyond some config changes. Part of this pack are staples like JourneyMap and Quark, large automation mods like Create and Thermal, and magic themed mods like Botania and Ars Noveau.
Terrain generation is highly customizable and very pretty above ground with TerraForged and more varied with the subtle biomes added by Atmospheric, Traverse, and Autumnity. Below ground there is also much more to discover win Yung's better caves and mineshafts, as well as the cave improvements offered by Quark.

Here is the full modlist:

I also used the following datapack: https://www.curseforge.com/minecraft/customization/strata-recipes which is in the public domain.

License note: Any modifications I made are free for your use. I do not own or claim to own the rights to the above mentioned mods, and any rights for the use of the original author's intellectual property remains reserved under the license they chose to publish it. All above mentioned mods are taken from the CurseForge website.

HoraPack

Absent by Design

Advanced Mining Dimension

AI Improvements

Akashic Tome

Alex's Mobs

Allurement

Apotheosis

AppleSkin

Aquaculture 2

Ars Nouveau

Artifacts

Atmospheric

Auto Ore Dictionary Converter

AutoRegLib

Autumnity

Basic Nether Ores [Forge/Fabric]

Biome Id Fixer (Forge)

Blood Magic

Blueprint

Botania