First i want to say its a "Fighter Serie". This means they are looking the same almost. To use same components is also a matter of productivity. ("Never change a running system!")
The main differences are in armament, armour, hold size and maneouveribility. In the shape they have small differences only, like number of engines, the whole size and a bit on the wings. The decision is yours. Some people like the design of a specific bomber, but prefer to fly an LF. So they have to make compromises. To fly the bomber or chose a LF which shape they don't like as much as the bomber ones. In my way no compromises must be made. If you like the design you can fly the type you prefer.
These fighters are not in relation to "Asgard Warriors". Asgard has no copyright and to me it fits better to name the serie "Asgard", cause of the fighter names(LOKI, ODIN, Thor). They shall look Rheinlandisch, cause the first time i developed the design, my intention was to make an EF to be the "Wrath" instead of the sats boosted "Valkyrie".
The sideview pics are to compare the differences in the size: