I don't think it's normal for Topps to include variations in the parallels, up until this year. It appears that there is an IR in for the 2019 Topps Chrome baseball set to add the variations to the parallels (or at least the Gold parallel) as well. Maybe this is a new thing Topps is doing going forward.
I would say that the easiest way to get those cards added is to submit an IR on each parallel's checklist page listing the card numbers of the variations, the names, and a description of the variation so that the Note2 can be formatted properly. However, as I do not have the L8 permissions necessary to insert cards into an existing checklist, and thus have never done it, I will certainly invite them to correct me if a more efficient way exists.
I'll never quit collecting entirely, but I am downsizing. Check out my COMC store and help me thin out what I don't want so I can buy cards that I do want. See something you like? Send me a message on here, and we can knock the price down quite a bit. I'll even take a bit of a loss if it means getting you a card you really want.