Lightning Service Providers, perhaps?
Only tried bitrefill - used it to charge up a prepaid MasterCard and then dumped it all into Genshin XD. (But for my friends first, THEN for myself).
However, KYC on those master cards is craycray, do keep away from them o-o 

 Are we talking about the same thing? I mean a LSP as in a service I can pay to open a big channel with my own node 

 Ooooh I see! I was pointed to  @LNServer - have two channels with them these days (and they actually survived almost a week of downtime of my own node!). Maybe they know of an LSP or can help? The one who pointed me there was  @The Fishcake🐶🐾 ^^ 

 Thanks, haven't heard about LN Server before. Looks like it's what I'm looking for 

 https://www.lnserver.com is a good place, they recently started their offering on the page 🐶🐾🫡