No exact equivalent, but here is my overview of best pads available on Aliexpress.
Elastic Interface chamois catalog:
https://www.elasticinterface.com/wp-content/uploads/2024/12/2024_Elastic-Interface-CHAMOISTECH_241218.pdfParis HP is pretty high in their range. You can get original from Darevie, Hiserwa, Rion for $25-40 which is great value.
https://s.click.aliexpress.com/e/_EIg72UQhttps://s.click.aliexpress.com/e/_EQkDnWQDarevie has seamless legs that are very elastic. Hiserwa is not for everyone - legs are tight and extremely long.
Raudax and other cheap brands offer fake Paris HP pad for less than $20, but I'm not sure about quality.
Ronde HP is currently on sale for $39(Cheji):
https://s.click.aliexpress.com/e/_EGfIhuiRoad Performance Force Men might be the best pad recommended for ultra long rides. $45 from Rion looks like great deal:
https://s.click.aliexpress.com/e/_EQS0jhyYkywbike with the same pad is $80+, although it does have better design and fit.
https://s.click.aliexpress.com/e/_Ev8BZC6Ykywbike offers Endurance 2.5 and other black EI cushion for $65.
https://s.click.aliexpress.com/e/_EQSURwQCouldn't identify those in catalog but I've found other brand charging $140 for the same pad:
https://www.victorychimp.cc/en-us/products/out-there-mens-cargo-bib-shorts-olive.
Ykyw is also using ,,Belgian'' pads recommended for 7/8h+. They are likely produced by Veon Insert and should be very good, since well known red Cheji pad is made by Veon and has rating of only 5h.
https://s.click.aliexpress.com/e/_EwwkoJGLameda, Santic are top brands that also use EI pads, but their prices are not that good.
Another Italian manufacturer available on Ali is Dolomiti Pads. Rion claims to use the same chamois as pro's from Intermarche-Wanty team:
https://s.click.aliexpress.com/e/_EzdLzAqOther Dolomiti pads with 120kg/m³ density and 8h rating:
https://s.click.aliexpress.com/e/_EIjb3Z4https://s.click.aliexpress.com/e/_ExQ0nZMBut the thickest and most dense(200kg/m³) chamois on Ali is... chinese no-name used by Fualrny:
https://a.aliexpress.com/_EGYnPNyDesign suggest it was inspired by Elastic Interface Road series and it's really comfortable. Straps could be more elastic. It's so thick that you risk looking like wearing adult diaper. But for $11 it's definitely worth checking out.
Rion is using EU sizing, for other brands I recommend taking one size larger.
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