That's a great video! I have never seen it. Thanks!

The thing that complicates it is four on the floor has lots of predated "almost but ok, not quite exactly" versions. Such as in Brazilian pop, take Participação from 1971: https://www.youtube.com/watch?v=7DP6hRt9xvw ... those percussion aren't far away from late-70s orchestral disco. Almost same BPM.

This drum style kinda came out of everywhere. Here it is in Pakistan also in 1971 for instance, Runa Laila, Rushdi, Shaukat Ali Khan & Munir - We Don´t Care, starts around 1 minute in: https://www.youtube.com/watch?v=c9uYjpkTkNo ... that's the 73 columbia release pictured in youtube, not the original 71 odeon one.

Here you can get it in part of this 1971 Phillipines release by Dakila as well during the chorus, https://www.youtube.com/watch?v=jUKDKXSA2-8

Or what about Sophy, from Puerto Rico also in 1971: No Quiero Que Te Vayas ... a very slight change in the drums and you get disco https://www.youtube.com/watch?v=2bhdOpVs9hU ... this one-step-away stuff was common, here's Polish artist Halina Frackowiak - Do końca świata https://www.youtube.com/watch?v=lgrUUfXesdM or ピンキー グッド・バイ from 1972: https://www.youtube.com/watch?v=WeRtlpY96B0 ... ok that last one was just for fun.

Anyway, I've been trying to compile this narrative for a long time ... all the soda flavors at once smashed together. That's all I can come up with.