1.20.1 Forge: mod for looking at the composition of entity population on server?

Hi guys! Do you know of any mods that let you analyse the composition of entity population on your server? Because this huge entity spike seems directly correlated with my TPS drop, but I just don't know what the entities could be coming from.

If you guys suspect something else, here's the link to the Spark profiler https://spark.lucko.me/oYTOc2YOdn ! Thanks for looking.