Don't know how available they are outside UK/Ireland but they're the same paper as Black n Red
I've tried some generic 80gsm plain paper, a pukka pad, some index cards, and this. I know that non of these are considered high quality but I never had these issues when using J.Herbin's Perle Noir ink on the same paper.
I would recommend Clairefontaine and seconding what the others said, Oxford Optik papers. They're really nice and what's more, they're considered part of the Back to School sale so you can get pretty good deals on them atm 👀
https://www.cultpens.com/c/q/brands/clairefontaine
http://Oxford Campus, A4 Notebook, Lined, 140 Page, Assorted Colours, Pack of 5 https://www.amazon.co.uk/dp/B00AUV70PW/ref=cm_sw_r_cp_api_i_CVqrFbD8K9MDZ
Rhodia is a nice alternative as well tho I've read some say that it's like Clairefontaine but slightly rougher and less white. It is better for some inks tho, I think sheen and shimmers are better on it, iirc
If this link doesn't work, it's just oxford campus notebook A4 on amazon.co.uk
Damn that looks like a good site, thanks for sharing! If you're looking for notebooks, I'd check out "Oxford Campus Notebooks" that's what I'm going to use :)