Gillette Open Comb - Old or New
Gillette Adjustable - Toggle, Fatboy, Slim or Super Adjustable
Merkur 37 Slant
All of those except the Toggle, Fanboy and Aristocrat can be easily found for well under $100 and they're all absolute classics in my opinion and will give you a very well rounded experience with de razors.
The razor process you were using before you were a part of this community.
Yes electric razor, disposable plastic Bics or fusions/hydras with canned goop.
Purely to remind you how far you have progressed and how much more enjoyable your shaves are.