I sympathize about seeking regression without the focus on wetting. It can be difficult. You will have to look through a lot but hopefully there's some things in these links that you will like!
https://www.youtube.com/channel/UCQEuBkVFktKY9W77MrAee3Q/videos?disable_polymer=1
https://www.youtube.com/user/evilireland1/videos?disable_polymer=1
https://www.youtube.com/playlist?list=PL5rCKA6nQT6K9VPUYemSrru3p4m91aXBK
https://www.youtube.com/playlist?list=PLLC_QeCcPNCW7Pro29AS33Tqqs_zv027h
https://www.youtube.com/playlist?list=PL4DooroAgu_6_Vw1m4DPu8vxQnTW2Bhq5