Varied logos for one brand

I'm investing in my shirt sublimation hobby and want to create "collections" with designs from a couple illustrator friends and some of my ideas. I want it to have a name/brand, not just the design on the clothes and/or merch. So I want a logo, and some other logos (I like the idea of having different styles(?) and combinations besides the original) and if it's recommended by designer a brand guide/portfolio, depending on needs. It's called "setentayuno" which means seventy one in Spanish, so I'd like the original one being a "70 y uno" combining numbers and letters (to ad the "one"). And a couple versions being only "setentayuno". I'm thinking of: 1 original, 2 in numbers and letters (70 y uno) as variations of the original, and 2 in letters "setenta y uno". 5 logos in total. I'd like to see negative space in numbers, if it looks good, and some italic and/or bold in letters. 2 colors sets are preferred, main color must be black, and combinations with white, yellow, dark red, or flashy orange. I attached some Pinterest inspo of how merch gonna look so you can think on matching the style and a poor drawing with ideas by me.